Question: a. Both interval widths and t-valuesb. Standard errorsc. Interval widthsd. t-valuese. Both standard errors and interval widthsThanks. A manager of a local store wants to

a. Both interval widths and t-valuesb. Standard errorsc. Interval widthsd. t-valuese. Both standard errors and interval widthsThanks.

A manager of a local store wants to estimate the mean amount spent per shopping visit by customers. Summary statistics from a sample taken reveal the following: Descriptive statistics Shopping Expenditures count 20 mean 49.3440 sample variance 81.2645 sample standard deviation 9.0147 minimum 23.78 maximum 6183 range 38.05 standard error of the mean 2.0157 If 95% and 98% confidence Intervals were developed to estimate the true shopping expenditure, what differences would exist? Multiple Choice

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=+ a. When you or one of your friends is looking for a part-time job, how many weeks does it typically take? After you fi nd a job, how many weeks does it typically last?

=+ 3. Give three explanations why the real wage may remain above the level that equilibrates labor supply and labor demand.

=+List three hypotheses that have been suggested to explain the difference.