Many employers are concerned about employees wasting time by surfing the Internet and e-mailing friends during work hours. The article "Who Goofs Off 2 Hours a Day? Most Workers, Survey Says" (San Luis Obispo Tribune, August 3, 2006) summarized data from a large sample of workers. Suppose the CEO of a large company wants to determine whether the mean wasted time during an 8-hour work day for employees of her company is less than the mean of 120 minutes reported in the article. Each person in a random sample of 10 employees is asked about daily wasted time at work (in minutes). Participants would probably have to be guaranteed anonymity to obtain truthful responses. Suppose the resulting data are:

108 112 117 130 111 131 113 113 105 128

(s = 9.45)

Do these data provide evidence that the mean wasted time for this company is less than 120 minutes? Use 0.05 as your significance level .

(A graph of the data shows no clear skew and no clear outliers.)One sample T hypothesis test: : Mean of variable H₀: = 120 H_A: < 120 Hypothesis test results:

Variable	Sample Mean	Std. Err.	DF	T-Stat	P-value
Wasted Time	116.8	2.9881246	9	-1.0709058	0.156