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antoniya [11.8K]
3 years ago
15

Sue and Javier are working on a statistics project to estimate the proportion of students at their school who have a pet dog. Su

e selects a random sample of 81 students from the 2,400 students at their school, and Javier selects a separate random sample of 64 students. They will both construct a 90 percent confidence interval from their estimates. Consider the situation in which the sample proportion from Sue’s sample is equal to the sample proportion from Javier’s sample. Which of the following statements correctly describes their intervals?
Mathematics
1 answer:
egoroff_w [7]3 years ago
6 0

Answer:

the width of sue's interval will be narrower than javier's.

Step-by-step explanation:

in this problem, i do believe that sue's interval will be more narrow. in the formula,

p-hat ± \sqrt{phat(1-phat)/ n ,

a larger "n" value will lead to a smaller standard error. given that the population proportion is the same for both, and the sample size is the only difference, the standard error of sue's interval will be smaller than javier's, therefore making her whole confidence interval smaller.

again, i do believe this is correct, this is what i have in my AP stat notes. hope this helps!

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What is the constant of variation, k, of the line y = kx through (3,18) and (5,30)?
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Y is 18 so 18=3k
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k=6 for (3,18)
for (5,30)let's see
y=30
30=5k
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5 0
3 years ago
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How many millimeters are equal to 4 liters
stealth61 [152]

Answer:

there is no relation between millimeters and liters

4000 milliliters = 4 liters

Step-by-step explanation:

"milli-" is a prefix meaning 1/1000. So 1 milliliter = (1/1000) liter. Thus it takes 1000 milliliters to make 1 liters, hence 4000 milliliters to make 4 liters.

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A meter, and a millimeter, is a measure of distance. A liter, and a milliliter, is a measure of volume. There is no sensible conversion between linear (one-dimensional) distance and 3-dimensional volume.

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3 years ago
A cone and its dimensions are shown in the diagram. Which measurement is closest to the volume of the cone in cubic inches?
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We know the height, but we are given the diameter instead of radius. So divide 5.625 by 2. You get 2.8125.

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20 Cubic Inches^3.

Also, people who don’t know the answers to questions shouldn’t just put a random answer for the points. It’s unfair.


3 0
3 years ago
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Answer:

15e4

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2 years ago
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