Chapter 8.1, Problem 10PB

CI for loneliness Refer to the previous exercise. The margin of error for a 95% confidence interval for the population mean is 0.12. Construct that confidence interval and interpret it.

8.9 Feel lonely often? The GSS has asked “On how many days in the past seven days have you felt lonely?” At sda. berkeley.edu/GSS, enter LONELY as the variable, select Summary Statistics in the menu of table options, and click

Run the Table to see the responses.

1. a. Report the percentage making each response and the mean and standard deviation of the responses. Interpret.
2. b. The standard deviation of the sample mean can be estimated using this data as 0.06. Interpret the value of 0.06.