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### Practice Problems

A company uses a productivity measure to assess how efficiently employees use their time at work

PSYC 220

##### 8. A company uses a productivity measure to assess how efficiently employees use their time at work. The population of employees had an average productivity rating of 55 (µ=55 and σ = 21). To see how working from home (sometimes called telecommuting) would affect productivity the company selected a sample of 49 employees to work from home.  Their average productivity rating was 48. Test the hypothesis that working from home affected productivity using an alpha of .01.

Hint
StatisticsLAST QUES:mean=  48.00 sd= sqrt(var) =  21.000 u=  55.00 n=  49.00 alpha= 5%critical value,  z(a/2)z(0.05/2)1.960Submit Your Question...

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