Mathematics, 15.04.2021 04:50, selena827
A researcher has conducted a survey using a simple random sample of 225 elementary teachers to create a confidence interval to estimate the proportion of elementary teachers favoring the addition of a soda machine to the cafeteria. Assume that the sample proportion does not change. The researcher now decides to survey a random sample of 25 teachers instead of 225 elementary teachers. Which of the following statements best describes how the confidence interval is affected by this change?
The width of the new interval is about the same width as the original interval.
The width of the new interval is about twice the width of the original interval.
The width of the new interval is about one half the width of the original interval.
The width of the new interval is about one third the width of the original interval.
The width of the new interval is about three times the width of the original interval.
Answers: 3
Mathematics, 21.06.2019 20:30, dominaricann2451
When you have 25 numbers, and jake picks 3 random numbers and puts them back, what is the chance bob has of picking those 3 numbers when he picks 6 random numbers (without putting them back)? explain.
Answers: 1
Mathematics, 22.06.2019 00:30, lisettetorres01
You eat $0.85 for every cup of hot chocolate you sell. how many cups do you need to sell to earn $55.25
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Mathematics, 22.06.2019 01:30, ginareyes0423
Awoman who is 64 inches with a shoulder width of 16 inches. write an equation relating the height h to the width w. find the height of a woman who has ashoulder width of 18.5 inches
Answers: 3
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