# QNT 351 Week 3 Connect Lab 2016 Version

May 19th, 2016
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1. A sample of 33 observations is selected from a normal population. The sample mean is 30, and the population standard deviation is 4. Conduct the following test of hypothesis using the 0.05 significance level. 2. At the time she was hired as a server at the Grumney Family Restaurant, Beth Brigden was told, “You can average \$73 a day in tips.” Assume the population of daily tips is normally distributed with a standard deviation of \$4.38. Over the first 35 days she was employed at the restaurant, the mean daily amount of her tips was \$74.23. At the 0.01 significance level, can Ms. Brigden conclude that her daily tips average more than \$73? 3. The Rocky Mountain district sales manager of Rath Publishing Inc., a college textbook publishing company, claims that the sales representatives make an average of 40 sales calls per week on professors. Several reps say that this estimate is too low. To investigate, a random sample of 38 sales representatives reveals that the mean number of calls m

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1. A sample of 33 observations is selected from a normal population. The sample mean is 30, andthe population standard deviation is 4. Conduct the following test of hypothesis using the 0.05significance level.H0H1mumuaOne tailed the alternate hypothesis is greater than directionbRejectcValue of test statsdDo not rejectThere ise<=>H02929whenz>1.6451.44insufficientp value0.07492. At the time she was hired as a server at the Grumney Family Restaurant, Beth Brigden was told,You can average \$73 a day in tips. Assume the population of daily tips is normally distributedwith a standard deviation of \$4.38. Over the first 35 days she was employed at the restaurant,the mean daily amount of her tips was \$74.23. At the 0.01 significance level, can Ms. Brigdenconclude that her daily tips average more than \$73?amumu<=>bRejectH0cvalue of test statsdp value7373whenz>1.660.04852.33(enter from top)3. The Rocky Mountain district sales manager of Rath Publishing Inc., a college textbook publishingcompany, claims that the sales representatives make an average of 40 sales calls per week onprofessors. Se

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