When 196 workers aged 18-25 were asked how many hours they worked in the previous week, the mean was 37.8 with a standard deviation of 13.4. Does this suggest that the population mean work week for this age group differs from 40 hours? Answer by completing parts (a) through (d).
a. Identify relevant and parameter variable.
Identify the parameter.
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b. State the null and alternative hypotheses.
c. Find the test statistic value.
Interpret the test statistic value.
d. Report the P-value.
Does this suggest that the population mean work week for this age group differs from 40 hours? Use common significance levels of .05 or .10
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