Use the Following to Answer Questions

question 8

Multiple Choice

Use the following to answer questions :
A sample of 126 corporate managers and another sample of 168 college professors produced mean job-related stress scores of 7.35 for the managers and 6.86 for the professors.Suppose that the standard deviations of the stress scores are 1.12 for the managers and 1.82 for the professors.The null hypothesis is that the mean stress scores are the same for corporate managers and college professors,while the alternative hypothesis is that the mean stress score for managers is different from the mean stress score for professors.
-The significance level for the test is 1%.What are the critical values of z?

• A)-2.58 and 2.58
• B)-1.96 and 1.96
• C)-2.33 and 2.33
• D)-3.09 and 3.09

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Definitions:

Interest Rates

The cost of borrowing money or the rate at which interest is paid by a borrower for the use of money.

Appreciation

An increase in the value of an asset over time, which can result from various factors including inflation, increased demand, or improvements to the asset.

Interest Rates

The percentage charged on borrowed money, or earned through investment, over a certain period of time.

Inflation Rate

The percentage rate at which the general level of prices for goods and services is rising, eroding purchasing power over time.