A family is relocating from St. Louis, Missouri, to California. Due to an increasing inventory of houses in St. Louis, it is taking longer than before to sell a house. The wife is concerned and wants to know when it is optimal to put their house on the market. Her realtor friend informs them that the last 21 houses that sold in their neighborhood took an average time of 60 days to sell. The realtor also tells them that based on her prior experience, the population standard deviation is 14 days.
What assumption regarding the population is necessary for making an interval estimate for the population mean?

Answers

Answer 1

Answer:

The assumption regarding the population which is necessary for making an interval estimate for the population mean is that:

a. We assume that the population has a normal distribution.

b. We assume that the central limit theorem applies.

Explanation:

The assumption regarding the population which is necessary for making an interval estimate for the population mean is that:

a. We assume that the population has a normal distribution.

b. We assume that the central limit theorem applies.

A normal distribution describes how the values of a variable are distributed. It is a probability distribution that is symmetrical about the central value or the mean, i.e. 50% of data are found to the left and right of the mean respectively. Most of the data are clustered around the mean, i.e. they occur or are found near the mean than far away from the mean. The graph form of a normal distribution will appear as a bell curve. In a normal distribution, mean = mode = median.

The Central Limit Theorem states that irrespective of the underlying distribution of a sample, when a variable does not follow a normal distribution, repeated random samples from the population will give sample means they are normally distributed. This means that the sampling distribution of the sample means approaches a normal distribution as the sample size gets larger.


Related Questions

Photosynthesis occurs with the help of
A. CO2 and Water
B. SO2 and water
C. Oxygen and CO2
D. Oxygen and water​

Answers

Explanation:

(A) = Carbon dioxide and water. Because, photosynthesis is the process by which green plants manufacturer their food by combining water and carbon dioxide in the process of sunlight energy trapped by chlorophyll to produce carbohydrate and released oxygen. from the above definition we see that, Photosynthesis cannot occur without water and carbon dioxide present

Which is the word equation for photosynthesis?

Answers

Answer:

carbon dioxide + water + sunlight + chlorophyll → glucose + oxygen

Explanation:

I hope this helps in any way :)

AL COMPRAR UN PRODUCTO NOS REBAJAN UN 8% PAGUE 48.000 EUROS . ¿CUÁL ERA EL PRECIO ORIGINAL?

Answers

Answer:

V.O = 52.174.

Explanation:

¡Hola!

En este caso, considerando la información dada, es posible para nosotros inferir que al haber una rebaja del 8%, pagamos solamente el 92% del valor original del producto, esto quiere decir que debemos dividir el valor pagado, €48.000, por 0.92 con el fin de conocer dicho precio original:

[tex]V.O=\frac{48.000}{0.92}\\\\V.O=52.174[/tex]

¡Saludos!

How many water molecules are needed to break down an oligosaccharide that contains 10 glucose units?
Classify the reaction.

Answers

Answer:

It take ten units of water to break down oligosaccharide that contains 10 glucose units

explain tidal air in biology​

Answers

Answer and Explanation:

The amount of air inhaled or exhaled in each respiratory cycle, during a normal, regular breathing.

this is the answer for
'select the correct location on the image.

Where are the photoreceptors located inside a human eye?'

Answers

nice I'm going to do this with all the answers i have now

Compare and contrast the advantages and disadvantages of wind power and geothermal power

Answers

Answer:

An Overview of Geothermal Pros and Cons:

Pros Cons

This energy source is more environmentally friendly than conventional fuel sources.  The largest single disadvantage of geothermal energy is that it is location specific.

A source of renewable energy.  Gases are released into the atmosphere during digging.

The number of exploitable geothermal resources will increase with ongoing research and development in the industry.  Geothermal energy runs the risk of triggering earthquakes.

A sustainable source of energy as its always available unlike wind and solar.  Expensive resource to tap into, with high upfront costs ranging from around $2-$7 million for a plant with a 1 megawatt capacity.

A reliable source as its easier to predict the power output from a geothermal plant with a high degree of accuracy.  Energy fluid needs to be pumped back into the underground reservoirs faster than it is depleted. Management is required to maintain sustainability.

No fuel is required.  

Increase in exploration meaning that new technologies are being created to improve the energy process.  

Pollution levels are much lower compared to fossil fuels.

Explanation:

The signs used depend on the species being surveyed and include the presence of runways and tracks on *
1 point
(a). soft substrates
(b) hard substrate
(c) dry mud
(d) rocks

Answers

Answer:

(a). soft substrates

Explanation:

Mobile organisms can be measured by both direct and indirect methods. Direct methods may involve observing the actual behavior (e.g., scoring via timing). Moreover, indirect methods are those where the technique used depends on the species being examined, collecting information such as through recording of tracks in the soft substrate (e.g., mud, sand, snow), presence of fur/feathers, droppings (mammals), etc. For example, indirect observation of insects may involve the determination of exoskeletons, sounds, etc.

If the velocity of a can increases from 30 ms-1 to 90 ms -1, the kinetic energy
increases by
a. 8 times
b. 9 times
c. 7 times
d. 6 times​

Answers

The answer to this one is 6 times.
Hello!

The right answer is 6times! Then D!

Byye and don’t forget I’m proud of you!!<333

The organ that controls your internal clock is called...​

Answers

Answer:

The circadian biological clock is controlled by a part of the brain called the Suprachiasmatic Nucleus

Explanation:

That should be right

what are the characteristics of normal cells and cancerous cells?​

Answers

Normal cells stop growing (reproducing) when enough cells are present. For example, if cells are being produced to repair a cut in the skin, new cells are no longer produced when there are enough cells present to fill the hole (when the repair work is done).

In contrast, cancer cells don’t stop growing when there are enough cells present. This continued growth often results in a tumor (a cluster of cancer cells) being formed.

A traumatic injury to the inferior angle of the mandible severs the hypoglossal nerve. Which of the following muscles would be affected?

a. Geniohyoid
b. Mylohyoid
c. Genioglossus
d. Stylohyoid

Answers

C, genioglossus is the answer :)

The muscle that would be affected is the Genioglossus. That is option C.

The hypoglossal nerve is the also known as cranial nerve XII.

This nerve arises from the nuclei in the medulla oblongata.

They supply:

the muscles of the tonguemuscles surrounding the hyoid bone andcontribute to swallowing and speech.

The muscles of the tongue  includes

genioglossus, hyoglossusstyloglossus, and palatoglossus

The genioglossus is a flat triangular muscle that forms the base by which the tongue is attached.

Since the hypoglossal nerve supplies the the tongue muscle (genioglossus), it would be must affected when mandible severs the hypoglossal nerve.

Learn more here:

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The_____
is like the ______
system of
the human body because they both_________.

Answers

Answer:

The cell wall is like the integumentary system of the human body because they both protect the interior from the external environment.

Explanation:

Succulents and cacti often have short, thick leaves with a waxy coat. What function does this structure serve?

A) retains water

B) the plant uses less energy to grow these short leaves and conserves energy

C) prevents water from evaporating off leaves

D)all of the above

Answers

Answer:

C) prevents water from evaporating off leaves

Explanation:

Succulents and cacti are a group of plants known as XEROPHYTES. These are plants that grow and survive in areas or conditions where there is lack of water e.g deserts.

However, these plants need to adapt to the low or no water condition and one of the ways they do this is by possessing short, thick leaves with a waxy coat. This enables them to preserve water that would have been lost via transpiration from the leaves.

Answer:

(c) prevent water from evaporating off leaves

How does human population growth and resource use impact biodiversity?

Answers

When human population expands, biodiversity rich areas are lost
Human being wants to control anywhere and everywhere in the world. Firm CEOs want to use cheap and easily available materials (such as palm oil). They want to convert natural forests into palm plantations. Therefore, biodiversity is lost in such places.
When human population increase without thinking about future, resources for people are used enormously. This leads new roads, new buildings, new industrial plants, etc. Therefore, original landscape is converted into new forms. Biodiversity is lost.
Although almost nobody lives in Antarctica, transboundary pollution and global climate change affect animals/creatures living there.

As human populations increase, the demand for resources such as food, water, and energy also increases.

What is biodiversity?

Biodiversity refers to the variety of life on Earth, including the variety of species, ecosystems, and genetic diversity within species.

Human population growth and resource use have a significant impact on biodiversity. This leads to habitat destruction, pollution, and climate change, all of which have negative impacts on biodiversity.

Habitat destruction: As human populations grow, they need more land for agriculture, settlements, and infrastructure development. Pollution: Human activities such as industrialization and transportation produce pollutants that can harm biodiversity. Climate change: Human activities such as burning fossil fuels for energy production lead to the emission of greenhouse gases, which contribute to climate change.

Thus, human population growth and resource use impact biodiversity by causing habitat destruction, pollution, and climate change.

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Which of these is true for a fertilized egg?
O
A. It has DNA from both parents.
O B. It has a haploid number of chromosomes. .
O C. It has DNA but no chromosomes.
O D. It has too many chromosomes until it splits.

Answers

A it has dna from both parents

Which of the following is a disadvantage of planting a variety of crops rather than a monoculture?
A.) It is more likely to lead to crop failure.
B.) It can decrease farming efficiency and profit.
C.) It can promote biodiversity in ecosystems.
D.) It can lead to an increased risk of parasite infection.

Answers

Answer:

D.) It can lead to an increased risk of parasite infection.

Explanation:

Monoculture is a system of farming or cropping whereby a single crop is planted on a given area of land. The opposite of this system of farming is known as multiple cropping, where a variety of crops are cultivated.

One disadvantage of planting a variety of crops over a single crop in monoculture is that it increases the risk of parasite/pest attack on the crops. Parasites and pest can easily shift to the variety of crops planted in the farm.

five adaptive features of animals in forest habitat​

Answers

Answer: mimicry, camouflage, poison, reduction in size and stature, and changing habitats.

Hope this helped you!

The differences in beak shape are examples of:

Answers

Answer:

BIOLOGICAL ADAPTATION

Explanation:

Bird beaks are textbook examples of BIOLOGICAL adaptation to diet, but their shapes are also controlled by genetic and developmental histories.

Answer: The first one is bacterial because it mutates very quickly compared to humans and the second one is biological adaptation

Hope it helps you if not sorry

Explanation:

eagles have specially adapted feet and talons to help them out. A series of bumps on the bottom of their feet -- known as spicules -- help them hold on to their prey during flight. They also have razor-sharp talons that they use to grab their prey, kill it and tear into.

The process of photosynthesis ultimately converts light energy into -

Answers

Glucose is the answer.

define cell and atom​

Answers

Answer:

Cell is the basic , functional unit of life

An atom is the smallest unit of ordinary matter that forms a chemical element .

3. The evolutionary pathways of ten different species are represented in the diagram below.
E
D
F
Time
G
Н,
B
Which two species are the most closely related?
A and F
G and
E and I
C and D

Answers

Answer:

C

Explanation:

when counting the number of organisms that differentiate between e and I, this answer gives the smallest number of organisms

What category of sensor is a first responder likely to use to determine the oxygen level in a victim's blood?

Answers

Answer:

Biometric sensor

Consider sebaceous and ceruminous glands. Then, click and drag each label into the appropriate category based on whether it pertains to sebaceous glands, ceruminous glands, or both.
A. Coats guard hairs to improve their informance
B. Usually opens up into a hair follicle
C. Simple, coiled, tubular glands
D. Secretes earwax
E. Coats the scalp hair with oil
F. Blockage and infection can cause pimples
1. Sebaceous
2. Ceruminous

Answers

Answer:

A. Ceruminous

B. Sebaceous

C. Ceruminous

D. Ceruminous

E. Sebaceous

F. Sebaceous

Explanation:

Ceruminous glands are modified sweat glands located subcutaneously in the cartilaginous two-thirds of the external auditory canal. Ceruminous glands produce together with sebaceous glands the cerumen (i.e. earwax), which protects the ear canal against physical damage and/or microbial infections. On the other hand, sebaceous glands are glands in the skin that secrete sebum, an oily, waxy substance that lubricates the hair and skin of mammals. These glands (sebaceous) are affected by sex hormones like testosterone that enlarges the glands due to the increased cell proliferation rate and estradiol, which reduces the size of the glands due to the accelerated cell breakdown. Sebaceous glands are holocrine glands in which secretions are produced in the cytoplasm of the cells and then they are released by the rupture of the plasma membrane, while ceruminous glands are apocrine glands where the accumulated secretion is pinched off with a portion of the cell.

In Wakanda, in a population in Hardy-Weinberg equilibrium, the frequency of the single recessive allele controlling vibranium assimilation, which affects superhuman abilities, is 0.2. What is the percentage of the population that is heterozygous for this allele

Answers

Answer:

32%

Explanation:

Hardy–Weinberg equilibrium is also known as Hardy–Weinberg law. The idea of Hardy–Weinberg equilibrium is about the frequency of alleles in a population. The frequency of an allele in the population will always remain the same in a population if that population is not influenced by any evolutionary consequences.

Hardy–Weinberg equilibrium binomial expression formula is p2+2pq+q2=1. Suppose the frequency of recessive allele = q.

and another normal allele is = p

Here Q = 0.2 so P will be 1- Q or 0.8

By Hardy–Weinberg equation p2+2pq+q2=1, Here 2pq denotes the frequency of recessive allele, so 2pq = 2 × 0.2 × 0.8 = 0.32, if converted into percentage it will be 32%.

Which statement describes all stable ecosystems?
1) Herbivores provide energy for the autotrophs,
2) The populations of predators are dependent on
the populations of their prey.
3) The number of autotrophs equals the number of
heterotrophs.
4) Consumers synthesize ATP from light energy.

Answers

2. The populations of predators are dependent on the populations of their prey.

Stable ecosystem has the populations of predators are dependent on the populations of their prey of predators .

What is ecosystem?

An ecosystem is a geographic area where plants, animals, and other organisms, as well as weather and landscape, work together to form a bubble of life.

Who are predators ?

Predators are organisms that hunt and kill other organisms for food. The organisms that are consumed by the predators are known as the prey.

Stable ecosystem has the populations of predators are dependent on the populations of their prey of predators .

Hence, option 2 is correct

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Deficiency of Vitamin K causes
A. Rickets
B. Anemia
C. Scurvy
D. Beri beri​

Answers

Answer:

I believe the answer is B. Anemia

Answer:

(B) = Anemia

Explanation:

because of shortage of blood due to the inefficiency to clot blood because of the absence or deficiency of vitamin K

Please answer ASAP will mark brainliest

Answers

Without enough iron, our bodies cannot produce enough of a substance in red blood cells that allow them to carry oxygen.

Answer:

If your body doesn't have enough iron, it can't produce enough healthy oxygen-carrying red blood cells – which can lead to anemia. Anemia is a condition in which the body is not producing enough hemoglobin. With anemia, your cells aren't getting enough oxygen.

Explanation:

what are the advantages of genetically modified plants​

Answers

Answer:

advantages are of genetically modified plants are the desired traits it results in but also they well-grown fruits and vegitables will be plump, ripe and delicious.

Explanation:

what is the important of deamination process in mammals ?​

Answers

Answer:

In situations of excess protein intake, deamination is used to break down amino acids for energy. The amine group is removed from the amino acid and converted to ammonia.

hope it helps

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