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The mean annual salary offer for a student graduating with a degree in accounting (in 2010)...

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Statistics

The mean annual salary offer for a student graduating with adegree in accounting (in 2010) was $48,722.

Suppose that a randomly selected sample of 20 accounting graduatesshows an average salary offer of $49,850 with a standard deviationof $3300.

A. How many degrees of freedom are there for the tdistribution?  

B. Assume that the population distribution is normal. What isthe value of the test statistic, t? Give your answer to two decimalplaces.


C. If we use a significance level of 0.05, what is the criticalvalue of t? (Hint: Use the attached table. Is this for a one-sidedor two-sided test?)  

Answer & Explanation Solved by verified expert
4.2 Ratings (711 Votes)
A Df n1 201 19B test statistics 153C    See Answer
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