what is the question tho
The final scores of students in mathematics are distributed normally with a mean of 72 and a standard deviation of 10. What is the probability that a student’s score will be between 65 and 78?.
Answer:
0.8041
Explanation:
0.8041
We know that
μ=72 and σ=5
and P(65<X<78)
We can determine the Z value as (X-μ)/σ
P( 65<X<78 )=P( 65-72< X-μ<78-72)
P((65-72)/5 < Z < (78-72)/5)P((65−72)/5<Z<(78−72)/5)
P(65 < X < 78 )=P(-1.4 < Z < 1.2)P(65<X<78)=P(−1.4<Z<1.2)
To fine the Z values:
P (-1.4 < Z < 1.2 )=P ( Z < 1.2 )-P (Z < -1.4 )P(−1.4<Z<1.2)=P(Z<1.2)−P(Z<−1.4)
From the standard normal tables:
P (Z < 1.2 )=0.8849P(Z<1.2)=0.8849
to find P ( Z<-1.4)
P ( Z < -a)=1-P ( Z < a )P(Z<−a)=1−P(Z<a)
From the standard normal tables:
P ( Z < -1.4)=1-P ( Z < 1.4 )=1-0.9192=0.0808P(Z<−1.4)=1−P(Z<1.4)=1−0.9192=0.0808
Therefore
P(-1.4 < Z < 1.2 )=0.8041P(−1.4<Z<1.2)=0.8041
P (65 < X < 78)=0.8041P(65<X<78)=0.8041
Use a linear approximation (or differentials) to estimate the given number. (round your answer to five decimal places. ).
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A food worker at a catered event finds grilled shrimp.
Answer:
Cool
Explanation:
Turkey sandwiches cost $2. 50 and veggie wraps cost $3. 50 at a snack stand. Ben has sold no more than $30 worth of turkey sandwiches and veggie wraps in the first hour of business. Let x represent the number of turkey sandwiches and y represent the number of veggie wraps. The inequality 2. 50x+3. 50y30 represents the food sales in the first hour. If ben has sold 4 veggie wraps, what is the maximum number of turkey sandwiches ben could have sold? 5 6 7 10.
Answer:
6
Explanation:
An object moves along a straight line so that at any time t, 0≤t≤9, its position is given by x(t)=7+6t−t2. For what value of t is the object at rest?.
We will see that for t = 3 seconds the object will be at rest.
When does an object is at rest?
We say that something is at rest if its velocity is equal to zero.
Here we know that the position equation of the object is:
x(t) = 7 + 6*t - t^2
To get the velocity, we need to differentiate with respect to the time, using the rule:
[tex]f(x) = a*x^n\\\\f'(x) = n*a*x^{n-1}[/tex]
We will get:
v(t) = 6 - 2*t
Now we just need to find the value of t such that the above equation is equal to zero:
0 = 6 - 2*t
2*t = 6
t = 6/2 = 3
Then for t = 3 seconds, the object will be at rest.
If you want to learn more about motion equations, you can read:
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Answer:3
t=
Explanation:
An object being at rest indicates the velocity is 0. Set the derivative of the equation equal to zero. (0=6-2t) Subtract 6 from both sides (-6=-2t) and then divide by negative 2 to get t=3, meaning the object is at rest at
There are 10 red marbles and 8 green marbles in a jar.
Answer: what's your question, Luis?
Explanation:
Answer:
feeling bad cuz they can't even reask the question since they've got 3 points you're in my prayers luis
The man in the well passage how do the children respond to the mans initial cry for help
Answer:
by making their way to Arthur's place.
6-8x=7x-9x=36 i dont know the steps to solve
Answer:
sorry but i think this is mistake
Answer:sorry
Explanation:
Since it's wednesday, buy for less gives a 5% discount for purchases. The items in rhonda's cart total $53. 75. She needs to know the cost of the items with the discount. So, she multiplies 5% times $53. 75 and subtracts the amount from $53. 75. Which expression would give rhonda the same result in one step?.
.95(53.75)
i think that's it :)
Read the descriptions below and answer the question that follows. Louis is 90 years old and suffers from Alzheimer’s disease. Olivia is 24 years old and does not want to be hypnotized. Frank is 16 years old and has attention deficit disorder. Alice is 30 years old and is a successful business woman. All of these subjects are otherwise healthy. Based on the information above, which of these subjects would most likely be easily hypnotizable? A. Louis B. Olivia C. Frank D. Alice.
Answer:
A. Louis
Explanation:
i took the test
Based on the information in the question , Louis can be hypnotizable.
What is alzhimer's disease?As far as dementia goes, Alzheimer's disease is the most prevalent. The disease is gradual, starting with mild memory loss and potentially progressing to the loss of communication and environmental awareness.
The brain regions that are responsible for thought, memory, and language are affected by Alzheimer's disease. It can significantly impair a person's capacity to carry out daily tasks.
Alzheimer's disease does not occur naturally as people age. One of the initial symptoms of Alzheimer's disease and other dementias is frequently memory loss.
An individual with Alzheimer's disease symptoms might also have more symptoms than memory issue.
Therefore, Based on the information in the question , Louis can be hypnotizable.
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Which timeline shows the correct order of contributions made to the discovery of dna?.
Answer:
DNA was discovered in 1800, and then scientists studied DNA with X-Rays. After a while, scientists published a 3D model of DNA, and shortly after, scientists decoded DNA genes.
Answer:
B
Credit:
I got this answer from the other guy, just posting this answer for those who don't want to read
Why did mirabeau b. Lamar easily win the presidency in 1838.
Answer:
the answer is (he believed in expanding the texas rangers and navy).
Explanation:
Answer:
c : he believed in expanding the texas rangers and navy.
Explanation:
Read each detail from the assignment text. Then, identify whether the detail indicates that the author’s purpose is to inform, to entertain, or to persuade. "Many Hispanics spoke only Spanish, and most whites spoke only English. " "He knew he had the courage to blast through tacklers and the toughness to work all day in the beet fields, but this seemed harder. " "There were only two days before the next game. ".
Answer: m
Explanation: m
The first detail "Many Hispanics spoke only Spanish, and most whites spoke only English" indicates that the author's intention is to inform, as it provides factual information about language usage in a specific context.
Who is author?The term "author" usually refers to the person who wrote a book, an article, or another piece of writing. It can also be used to describe the creator of other types of works, such as music, art, or film.
The first detail "Many Hispanics spoke only Spanish, and most whites spoke only English" indicates that the author's intention is to inform, as it provides factual information about language usage in a specific context.
The second detail "He knew he had the courage to blast through tacklers and the toughness to work all day in the beetroot fields, but this seemed harder" indicates that the author's intention is to entertain, as it uses descriptive language to create a sense of drama and tension.
The third detail, "There were only two days until the next game," indicates that the author's intention is to inform, as it provides factual information relevant to a specific context.
Thus, these are the details that indicates that the author’s purpose is to inform, to entertain, or to persuade.
For more details regarding author, visit:
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Ordinary table salt is composed of.
When a cross is made and a trait disappears in the f1 generation, only to reappear in the f2, the trait is probably.
Which of the following statements about convection is true.
Answer:
B
Explanation:
The base of a pyramid has n sides.
MATHS
HOUSE
For SAT
OCT EST 2020 SEC 4
13. Maria downloaded to her music library a total
of 350 pop and rock songs. If the ratio of pop
to rock song is 3 to 11. How many rock songs
are there in Maria's library?
A. 75
B. 125
C. 175
D. 275
Answer:
D. 275
Explanation:
3 + 11 = 14
350 ÷ 14 = 25
25 × 3 = 75
350 - 75 = 275
Answer = 275
Answer:
Well you can add the ratio
since its pop to rock
3:11
3+11=14
350/14=25
now you jsut multiply that to each ratio
3*25=75
11*25= 275
So (d) 275 rock songs
We flowers in the school garden when it started to rain.
This is the complete sentence:
We were planting flowers in the school garden when it started to rain.I was able to find the complete exercise with its options to choose from online, which are:
were planting plant are planting have planted"Were planting" is the only one that is gramatically correct to complete the sentence given, because the sentence says that we were doing something when something else happened, so you need to start with the past continuons.
Check more information in the following link https://brainly.com/question/25005984?referrer=searchResults
Would you recommend living in a city or living in the desert?.
Answer: city because living in the desert might be hard to find food and you would overheat eventually.
Explanation: Hope this helps :)
Carmen buys 153 shares of Cawh Consolidated Banks, each of which pays a constant yearly dividend of $7. 14. After six years, how much has Carmen received in dividends? a. $5,783. 40 b. $1,820. 70 c. $1,092. 42 d. $6,554. 52.
Answer:
The answer is D
Explanation:
Procter & gamble offers tide detergents, charmin bathroom tissue, crest toothpaste products, and pampers diapers, as well as a host of other household brands. These products all represent a.
Procter & gamble offers tide detergents, charmin bathroom tissue, crest toothpaste products, and pampers diapers, as well as a host of other household brands. Thus, these products all represent a: Product mix.
A product refers to any physical object or material that typically satisfy and meets the demands, needs or wants of customers.
Hence, a product comprises the finished goods that gives satisfaction to a customer's needs and wants.
A product mix is also referred to as product portfolio or product assortment and it can be defined as a complete set of products that are being offered by a business firm, for sale to consumers.
Some examples of the products in a product mix are:
Tide detergents.Charmin bathroom tissue.Crest toothpaste products.Pampers diapers.Read more: https://brainly.com/question/17151791
1 mile 5280 feet
61 centimeters == 2 feet
Based on the information above, how many
centimeters are equivalent to 3 miles?
A) 161,040
B) 322,080
C) 183,120
D) 644,160
Answer:
B) 322,080
Explanation:
322,080÷61=5280
What would you call 2-1-1 for.
Answer:
Product safety information
Explanation: it give you information on the things like simple matter etc
Which of the following is a result of gravity in relation to moving tectonic plates.
Answer:
Hello!!
Which of the following is a result of gravity in relation to moving tectonic plates?
A result of gravity in relation to moving tectonic plates is ridge push and slab pool.
Hope this helps!!
Explain how biology can be studied from a microscopic.
The density of solid aluminum is 2. 70 g/cm3. If a 1g piece of aluminum is dropped in a cup of water, what will happen to the aluminum? (the density of water is 1. 00 g/cm3. ).
Answer:
B
Explanation:
Why might you choose to filter a list or table instead of simply sorting it?.
The Ghana Empire was located in the part of Africa.
Answer:
western Africa was the place
Consider this equation. 7. 8 2(0. 75m 0. 4) = -6. 4m 4(0. 5m - 0. 8) Mia solved the equation and determined that m = 2. Is she correct? She is incorrect because when substituting 2 for m the result was a true statement. She is incorrect because when substituting 2 for m the result was a false statement. She is correct because when substituting 2 for m the result was a true statement. She is correct because when substituting 2 for m the result was a false statement.
Answer:
675
Explanation:
