L 4

Description

1. For the variables EMAILHR and TVHOURS:

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Use the DESCRIPTIVES command to obtain means and standard deviations.

Answer the following:

Use the output to formulate confidence interval estimates for the population values for the two variables above. (use 99% confidence level or alpha level .01) Show your work.

Interpret your results.

2. For the variable SEX:

Use the FREQUENCIES command to get sample proportions for the following: proportion female.

Answer the following:
Use the output to formulate confidence interval estimates for the population values for the proportion female (use 90% confidence level or alpha level .10). Show your work.

Interpret your results.