Suppose that a random sample of 85 high school classrooms in the state of Iowa is selected and a 95 confidence interval for the proportion that has Internet access is (0.73, 0.79). Which of the following is a correct interpretation of the 95 confidence level?
1.The method used to construct the interval will produce an interval that includes the value of the population proportion about 95 of the time in repeated sampling.
2.You can be 95 confident that the sample proportion is between 0.73 and 0.79.
3.There is a 95 chance that the proportion of all high school classrooms in Iowa that have Internet access is between 0.73 and 0.79.
4.You can be 95 confident that the proportion of all high school classrooms in Iowa that have Internet access is between 0.73 and 0.79.
5.None of these is a correct interpretation of the confidence level.
Question 2
A 90 confidence interval for a population proportion calculated using data from a random sample of size n = 51 is (0.573, 0.787). Which of the following is the 95 confidence interval calculated from the same data?
1.(0.602, 0.758)
2.(0.620, 0.740)
3.(0.553, 0.807)
4.(0.543, 0.817)
5.(0.486, 0.874)
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