All SPSS variables you need to complete this exam are located in the GSS2016.SAV dataset located in Canvas under the Start Here area. Please use this dataset to complete the exam. Attach your output to the end of the document, unless it unless otherwise requested by the question. Problems 1 and 2 include Optional Extra Credit questions that you may choose to complete. Where applicable, write all hypotheses in both sentence (i.e. "there is no difference...") and statistical notation (i.e. "?1 = ?2") format.

PART II. Confidence Intervals/Estimation.

3. Examine the following descriptive output for the variable WEEKSWRK- How many weeks respondent worked last year. Responses are for U.S. Adults that are employed full time.

Descriptives Statistic Std. Error weekswrk WEEKS R. Mean 47.40 .349 WORKED LAST YEAR 95% Confidence Interval Lower Bound 46.71 for Mean Upper Bound 48.09 5% Trimmed Mean 49.17 Median 52.00 Variance 110.943 Std. Deviation 10.533 Minimum 0 Maximum 52 Range 52 Interquartile Range 2 Skewness -2.753 .081 Kurtosis 7.383 162