Question

A random sample of 258 cell phone users ages 20 to 39 were asked if they...

A random sample of 258 cell phone users ages 20 to 39 were asked if they use their cell phones to stay connected while they are in bed. The same question was asked of each person in a sample of 129 cell phone users ages 40 to 49. The survey found that 168 of the 258 people in the sample between the ages of 20 to 39 years old and 61 of the 129 people in the sample between the ages of 40 to 49 years old said that they sleep with their cell phones. Is there a difference in the proportions for these two populations? Use a significance level of 0.10.

What is the test statistic for this test?

A random sample of 258 cell phone users ages 20 to 39 were asked if they use their cell phones to stay connected while they are in bed. The same question was asked of each person in a sample of 129 cell phone users ages 40 to 49. The survey found that 168 of the 258 people in the sample between the ages of 20 to 39 years old and 61 of the 129 people in the sample between the ages of 40 to 49 years old said that they sleep with their cell phones. Is there a difference in the proportions for these two populations? Use a significance level of 0.10.

What is the decision for this test?


A random sample of 258 cell phone users ages 20 to 39 were asked if they use their cell phones to stay connected while they are in bed. The same question was asked of each person in a sample of 129 cell phone users ages 40 to 49. The survey found that 168 of the 258 people in the sample between the ages of 20 to 39 years old and 61 of the 129 people in the sample between the ages of 40 to 49 years old said that they sleep with their cell phones. Is there a difference in the proportions for these two populations? Use a significance level of 0.10.

What is the p-value for this test?


A random sample of 258 cell phone users ages 20 to 39 were asked if they use their cell phones to stay connected while they are in bed. The same question was asked of each person in a sample of 129 cell phone users ages 40 to 49. The survey found that 168 of the 258 people in the sample between the ages of 20 to 39 years old and 61 of the 129 people in the sample between the ages of 40 to 49 years old said that they sleep with their cell phones. Is there a difference in the proportions for these two populations? Use a significance level of 0.10.

What is the critical value(s) for this test?
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