1. A random sample of 15 monthly rents for two-bedroom apartments was selected from a certain city. The mean of this sample is $636. Assume the population standard deviation is $121. A group of students think the mean rent for two-bedroom apartments is less than $650. Test their claim with a significance level of =0.5

(A) Identify the p-value.

2. A marketing manager for a cell phone company claims that more than 35% of children age 10 have cell phones. In a random sample of 5000 it is found that 1805 had cell phones. Can you conclude that the manager's claim is true? Use a significance level =0.1

Calculate the test statistic.

3. Based on the output when testing to see if the population proportion of left handed students at BCTC is greater than 0.10, identify the following.

(A) Identify the standard error.

(B) Identify the p-value.

Based on the output when testing to see if the population mean heart rate of BCTC students is not equal to 80, identify the following.

(A) Identify the sample mean.

(B) Identify the standard error.

(C) Identify the T value.