Question
Asked Feb 28, 2019
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Billy wants to estimate the percentage of students who live more than three miles from the school. He wants to create a
95% confidence interval which has a margin of error of at most 3%. How many students should be polled to create the
confidence interval?
Z0.10
Z0.05 Z0.025 Z0.01 Zo.005
1.282 1.645 960 2.326 2.576
Use the table of values above.
Select the correct answer below:
0 203
O 267
O 752
1,068
O 2,135
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Billy wants to estimate the percentage of students who live more than three miles from the school. He wants to create a 95% confidence interval which has a margin of error of at most 3%. How many students should be polled to create the confidence interval? Z0.10 Z0.05 Z0.025 Z0.01 Zo.005 1.282 1.645 960 2.326 2.576 Use the table of values above. Select the correct answer below: 0 203 O 267 O 752 1,068 O 2,135

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Expert Answer

Step 1

The 95% confidence interval:

The 95% confidence interval for the population proportion, π is such that:

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Step 2

Assumption and calculation:

When the value of p is unknown,...

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