Problem Set 3.6:Confidence Intervals

Criterion:Calculate a one-sample t test in SPSS.

Data:Riverbend City online news advertises that it is read longer than the national news. The mean for national news is 8 hours per week. The following sample of the Riverbend City online news readers is: 5, 7, 6, 2, 4, 8, 5, 4, 18, 21, 8, 7, 4, 5, 6.

Criterion:Calculate confidence intervals using SPSS.

Data:Usethe SPSS output from Problem Set 3.5 above.

Instructions: Based on the SPSS output from Problem Set 3.5, including a test value (population mean) of 8, calculate the 95% confidence interval.

Competency:

Calculates confidence intervals using SPSS with no errors, and showing required calculations.

I have tried to calculate the lower and upper confidence intervals by hand but i am not coming up with what SPSS calculates. i have looked at the textbook and i still do not understand.