Last Year,during an Investigation of the Time Spent Reading E-Mails $\alpha$

question 117

Multiple Choice

Last year,during an investigation of the time spent reading e-mails on a daily basis,researchers found that on Monday the average time was 50 minutes.Office workers claim that with the increased spam and junk mail,this time has now increased.To conduct a test,a sample of 25 employees is selected with the following results: sample mean = 51.05 minutes and sample standard deviation = 14.2 minutes.What is the critical value for $\alpha$ = .05 to test the hypotheses.

• A)1.711
• B)2.064
• C)2.060
• D)1.708
• E)1.645

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Definitions:

Regression Analysis

A statistical method used for estimating the relationships among variables, often used to predict the outcome of a dependent variable based on the changes in one or more independent variables.

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Staircase Analysis

An evaluative technique that segments a process or development into distinct levels or phases for detailed assessment and review.