About the QNT 351 Week 3 Guide
Welcome the the QNT 351Week 3 Study Guide! This guide contains all the necessary information to ace the MyStats Lab in the second week of class in Quantitative Analysis. A total of 15 questions and answers are included in the study guide, including interactive charts, graphs, and statistical symbols.
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A sample of 35 observations is selected from a normal population. The sample mean is 28, and the population standard deviation is 6. Conduct the following test of hypothesis using the 0.05 significance level.
At the time she was hired as a server at the Grumney Family Restaurant, Beth Brigden was told, “You can average $88 a day in tips.” Assume the population of daily tips is normally distributed with a standard deviation of $2.50. Over the first 50 days she was employed at the restaurant, the mean daily amount of her tips was $89.93. At the 0.10 significance level, can Ms. Brigden conclude that her daily tips average more than $88?
The Rocky Mountain district sales manager of Rath Publishing Inc., a college textbook publishing company, claims that the sales representatives make an average of 44 sales calls per week on professors. Several reps say that this estimate is too low. To investigate, a random sample of 35 sales representatives reveals that the mean number of calls made last week was 45. The standard deviation of the sample is 4.5 calls. Using the 0.050 significance level, can we conclude that the mean number of calls per salesperson per week is more than 44?
A United Nations report shows the mean family income for Mexican migrants to the United States is $28,120 per year. A FLOC (Farm Labor Organizing Committee) evaluation of 27 Mexican family units reveals a mean to be $39,750 with a sample standard deviation of $12,765. Does this information disagree with the United Nations report? Apply the 0.01 significance level.
+ 7 Total New Solutions for 2017
QNT 351 Week 3 Excerpt from Question One
An industrial group reports that there were approximately 122,000 industrial robots operating in a region last year. The graph shows the percentages of industrial robot units assigned to each of six task categories.
e. What percentage of industrial robots are used for either arc welding or dispensing/coating? Correct Answer = 43%
Get All 15 Answers on the Full MyStatsLab Answer Sheet