Please help! 20 points

The results of a study revealed a sample proportion of 0.43 for a sample with 78 respondents. What is the 99% confidence interval for this situation?

A.
37.39% and 48.61%
B.
33.75% and 52.25%
C.
32.01% and 53.99%
D.
28.54% and 57.46%

Answers

Answer 1

Answer:

i think it is b I hope it is right

Answer 2

Answer:

D. 28.54% and 57.46%

Step-by-step explanation:

Plato


Related Questions

A small plane is 4 miles by land away from the airport. The angle of elevation from the airport to the airplane is 6.50? What is the altitude of the plane? Round your answer to the nearest tenth of a mile. 0.1 mile b. 0.5 mile 35.1 miles d. 8.6 miles​

Answers

Answer:

tana=h/x

tan6.5=h/4

h=4tan6.5

h=0.5 mi

Step-by-step explanation:

I hope this helps u! :D

if an area of the rectangle below is 39 square feet, sides are x-2 and x+8 find the area of x

Answers

Answer:

x  = 5.

Step-by-step explanation:

The area of a rectangle can be determined by the following formula.

A = l ⋅ w  

l  stands for length or the longer side.

w  stands for width or the shorter side.

Now, we can plug the values we are given into the equation.

A = ( x − 2 ) ⋅ ( x + 8 )

The easiest way to multiply is to follow the acronym FOIL , which stands for First Outside Inside Last, and dictates the order in which you multiply these terms.

A = x 2 + 8 x − 2 x −16 = x 2 + 6 x − 16

Now, we can plug in the given value for the area.

39 = x 2 + 6 x − 16  

Next, we simplify by moving all terms to one side and factor the equation.

0 = x 2 + 6 x − 55

Finally, we factor the equation. This means we reverse-FOIL, trying to determine the two things that we multiplied together.

0= ( x − 5 ) ⋅ ( x + 11 )

If the equation ultimately equals zero, either  ( x − 5 )  or  ( x + 11 )  or both equal zero. Therefore, we set each equal to zero to find the value of  

x .

x − 5 = 0 x = 5 x + 11 = 0

x = − 11

Since  x  is a length, we know it cannot be negative. Thus, we can conclude that it equals 5.

Which value of m makes the equation true?
8+m=27
Hurry I need an answer!!!!

Answers

Answer:

19

Step-by-step explanation:

given that 8 + m = 27

we need to find m

we can do this by isolating the variable using inverse operations

8 + m = 27

we want to get rid of the 8 in 8 + m

The opposite of addition is subtraction

So we want to subtract by 8 but remember what ever we do to one side we want to do to the other side

So we subtract 8 from each side

8 - 8 cancels out

27 - 8 = 19

we're left with m = 19

what is the measurement?

Answers

this question involves trig

sinx=p/h -----> some people have  

cosx=b/h ----> curly brown hair  

tanx=p/b -----> through proper brushing

we have p and h in this question so we can use the first formula

[tex]sinx=\frac{23}{28} \\x=sinx^{-1} \frac{23}{28} \\x=55.2[/tex]

Answer:

55.2

Step-by-step explanation:

sinx= 23/28

multiple both sides by inverse sin

x= sin^-1(23/28)

x= 55.2

PLS AWNSER I WILL GIVE BRAILIEST

Answers

suzy will be walking around the circumfernnce of the fountain

circumfernce= [tex]2\pi r[/tex]

r is half of the diameter so it will be 5

[tex]2\pi (5)=31.4[/tex]

as she walks around it 3 times it will be

[tex]31.4 *3 = 94.2 feet[/tex]

so the answer is H. 94.2 feet

please mark as brainliest


I WILL GIVR U BRAINERLEST AND A LIKE

The windows in an office building are
shaped like parallelograms. The base of
each window is 1.8 meters and the
height is 1.5 meters. What is the area
of each window?

Answers

Answer:2.7

Step-by-step explanation:

Just multily the 2 products

Find the range of the data

5,9,13,6,4,5,8,12,12,6

Answers

Answer:

9

Step-by-step explanation:

highest value: 13

lowest value: 4

13-4= 9 which is the range

Answer: 9

Step-by-step explanation: 13-4=9

what is solution to
12²-5²​

Answers

Answer:

119.

Step-by-step explanation:

12x12 is 144

5x5 is 25

144-25 = 119

$500 at 12% for 6 months (0.5 years) Find the interest

Answers

Answer:

Step-by-step explanation:

500(.12)(.5)= $30 interest

Determine whether the series -3 + 9 - 27+ .... is convergent or divergent.

Answers

Answer:

divergent

Step-by-step explanation:

just took it

Plzzz help asappppppoppp

Answers

Answer:

C

Step-by-step explanation:

Joyce packed lunches for the Shiloh Football Team. If she packed 75 pounds of bagged lunches. Each bag weighed 1 1/2 pounds. How many lunches did she pack?

50


60


70


80
WILL GIVE BRANLIEST

Answers

Answer:

50

Step-by-step explanation:

total weight=75 pounds

each bag weighed 1 1/2 pound=3/2 pound

no. of lunches=total weight/weight of each lunch

=75/(3/2)

=75*2/3

=50lunches

Answer:

50

Step-by-step explanation:

You need to divide 75 lb by 1 1/2 lb.

[tex] 75 \div 1 \frac{1}{2} = 75 \div \dfrac{3}{2} = \dfrac{75}{1} \times \dfrac{2}{3} = \dfrac{150}{3} = 50 [/tex]

Answer: 50

someone please help me with this ASAP!

Answers

Answer:

foreal

Step-by-step explanation:

In the school band, 8/24 of the members play the trumpet. In simplest form, what fraction of the band plays the trumpet?

Answers

1/3 of the band plays the trumpet

Please help I’ll mark you as brainliest if correct!

Answers

Answer:

The wright answer is 16.33 inches

Plz answer this I will give brainliest

Answers

Answer:

C

Step-by-step explanation:

A=6a²=6·6.5²=253.5

Don uses a funnel to pour oil into his car engine. The funnel has a radius of 6 cm and a slant height of 10 cm. How much oil, to the nearest cubic centimeter, will the funnel hold.

Answers

This funnel will hold approximately  2387.61    the volume of oil that the funnel can hold is approximately  2387.61 ?

help me and I’ll give you brainliest

Answers

Answer:

r = 16

Step-by-step explanation:

6/6 = r/16

6r = 96

/6     /6

r = 16

6r I would say I believe


Find the circumference of the circle. Round to the nearest hundredth.

Answers

I think it’s A hope this helped

Find the perimeter and area of the rectangle.
20 ft
7 ft
The perimeter is
ft and the area is

Answers

Answer:

Area is 140 ft2

perimeter is 54 ft

Answer:

54 and 140

Step-by-step explanation:

If the lengths are 20ft and 7ft, then you can just add 20+20+7+7, which equals 54.

The area is 140, because if you multiply 20 by 7, thn you get 140.

Hope that this helps!

Johanna flips a coin, and then she spins a spinner with 4 equal sections colored yellow, green, red, and purple.

Answers

Answer:

What's the question though?

The circumference of a circle is 604 cm. What is the diameter of the circle?

Answers

Step-by-step explanation:

The Circumference is:

[tex]c = 2\pi \: r[/tex]

Radius r is:

[tex]r = \frac{d}{2} [/tex]

So,

[tex]c = \pi \: d \\ d = \frac{c}{\pi} \\ d = \frac{604}{\pi} \: cm[/tex]

Will give brainliest for correct answer

Answers

Answer:

The first picture on the second page

Step-by-step explanation:

The first picture on the second page would be the answer because it gives exactly one input for each output. It also passes the vertical line test because no point throughout the line creates a vertical line.

The first picture, none of the x values have 2 answers.

whats the solution to -12x ≤ -72

Answers

Answer:

I love algebra anyways  

the ans is in the picture with the steps  

(hope it helps can i plz have brainlist :D hehe)

Step-by-step explanation:

Answer:

Step-by-step explanation:

[tex] - 12x \leqslant - 72 \\ x \geqslant \frac{ - 72}{ - 12} \\ x \geqslant 6[/tex]

The direction changes when we divide by nagative value

I hope that is useful for you :)

PLEASE HELP I NEED THIS TO GET MY GRADE UP

Answers

Answer:

[tex]y = 4.5x[/tex]

Step-by-step explanation:

Given

The attached table

Required

The table equation

The table shows a linear relationship.

So, we calculate the slope (m) first

Using:

[tex]m = \frac{y_2 - y_1}{x_2 - x_1}[/tex]

Where:

[tex](x_1,y_1) =(2,9)[/tex]

[tex](x_2,y_2) =(6,27)[/tex]

So, we have:

[tex]m = \frac{27 - 9}{6 - 2}[/tex]

[tex]m = \frac{18}{4}[/tex]

[tex]m = 4.5[/tex]

Next, the equation is calculated using:

[tex]y = m(x - x_1) + y_1[/tex]

So, we have:

[tex]y = 4.5(x - 2) + 9[/tex]

Open bracket

[tex]y = 4.5x - 9 + 9[/tex]

[tex]y = 4.5x[/tex]

Which statement is true about the relationship between the height of the plant and the number of days? This relationship is a function because the plant can only be one height at a time. This relationship is not a function because the plant can only be one height at a time. This relationship is a function because the plant can be more than one height at a time. This relationship is not a function because the plant can be more than one height at a time.

Answers

Answer:

This relationship is a function because the plant can only be one height at a time.

Step-by-step explanation:

Functions occur when the recorded x-value is varied each time. Since the height of the plant (the x-value) varies each day, it is a function.

In a math class with 21 students, a test was given the same day that an assignment was due. There were 12 students who passed the test and 14 students who completed the assignment. There were 4 students who failed the test and also did not complete the assignment. What is the probability that a student completed the homework given that they failed the test?

Answers

Answer:

5/9

Step-by-step explanation:

The given is students that failed the test. 5 students completed the homework and failed the test and there is a total of 9 students who failed the test. So, the answer would be 5/9

Using it's concept, it is found that there is a 0.5556 = 55.56% probability that a student completed the homework given that they failed the test.

What is a probability?

A probability is given by the number of desired outcomes divided by the number of total outcomes.

In this problem, there are 21 - 12 = 9 students who failed the test, and of those, 9 - 4 = 5 completed the homework, hence the probability is given by:

p = 5/9 = 0.5556.

0.5556 = 55.56% probability that a student completed the homework given that they failed the test.

More can be learned about probabilities at https://brainly.com/question/14398287

#SPJ2

Can someone please help me with Systems of Equation. If so please comment here and friend me at fmilluzionz#1521. I am in 8th grade math

Answers

Answer:

The FitnessGram PACER Test is a multistage aerobic capacity test that progressively gets more difficult as it continues. The test is used to measure a student's aerobic capacity as part of the FitnessGram assessment. Students run back and forth as many times as they can, each lap signaled by a beep sound.

Step-by-step explanation:

Whats the area of number 10 ? Help please, help me do it and explain if you can! BTW THIS IS COMPOSITE SHAPES

Answers

Answer:

10. Area = 72 units²

Step-by-step explanation:

10. The shape in number 10 is a trapezoid.

Area of trapezoid = ½(a + b)*h

Where,

a = 6

b = 12

h = 8

Area = ½(6 + 12) * 8

Area = ½(18)8

Area = 72 units²

X is proportional to ✓y where y>0 .
y is increased by 44%
work out the percentage increase in x​

Answers

Answer:

20%

Step-by-step explanation:

x = k√y

Increase y by 44%. y becomes 1.44y.

x = k√(1.44y)

x = 1.2k√y

x went from k√y to 1.2k√y.

(1.2k√y)/(k√y) = 1.2

x is now 1.2 times greater than it was, so the increase in x is 20%.

Answer: 20%

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