## (solution) Practical Application Scenario 1 You are the manager of the

Practical Application Scenario 1

You are the manager of the Gander Mountain store in Frogtown, Illinois. Recently, a customer mentioned they believed your prices for ammunition were lower than the prices of Gander Mountain's primary competitor in hunting equipment, Cabela's. You would like to include that statement in a forthcoming print advertisement, so you need statistical evidence to support this assertion.

Identify the null and alternative hypotheses needed to test the contention. Then identify the most appropriate sample selection technique to gather data for testing the hypotheses. What statistical test should you use to accept or reject this hypothesis using the data you will collect?

Practical Application Scenario 2

Your love of golf has brought you back to the range as the new product manager for UniDun's Straight Flight (SF) line of golf balls. The company's research and development group has been experimenting with dimple patterns that promote straight flight and feel they have achieved some degree of success; however, you are worried about the effect that the new pattern might have on driving distance.

The Golf Ball Distances document contains test results that compare the driving distances for the two different kinds of balls: 40 balls of the new SF type and 40 of the current UniDun type. Your job is to determine if the current UniDun balls can be driven further than the new SF balls. To resolve this question, you need appropriate answers to the following four questions. Remember to use your Business Statistics in Practice textbook, the supplementary instruction session archives, and the optional course resources to help you answer each of the following questions:

1. Identify the appropriate null and alternative hypotheses for this test. Express each in writing and in the form of an equation.
2. Identify the appropriate statistical test to accept or reject the null hypothesis.
3. Calculate the statistical parameters, the mean, variance, and standard deviation. Then calculate the statistical test and the p-value.
4. In a three- to five-paragraph synopsis, explain your results to the vice president of marketing, including the terms of the scenario variables.

Hint: You will need to use Excel's Analysis ToolPak, or the Mac equivalent, StatPlus:mac, to calculate the statistical parameters, the mean, variance, and standard deviation, and to calculate the statistical test that you have chosen and its p-value. SAS Enterprise Guide users do not need to first calculate the statistical parameters.

Practical Application Scenario 3

As the food court manager at the Mall of Elbonia, you must determine how much time customers spend at the mall during different times of the week (for example: midweek day; midweek evening; weekend day; weekend evening). Last week, the mall survey staff randomly surveyed mall visitors as they left the mall. One key question asked how much time the customer had spent in the mall on that day.

The findings from this study are provided in the document titled Mall Time Results, provided in Resources. Columns A through D show the time spent by the customers interviewed, according to the part of the week and time of day when the interviews occurred. Is there any statistically significant difference (at alpha = .05) in the average amount of time people spend in the mall based on the part of the week and time of day? To determine the answer to this question, you need appropriate answers to all of the following four questions. Remember to use your Business Statistics in Practice textbook, the supplementary instruction session archives, and the optional course resources to help you answer each question.

• Identify the null and alternative hypotheses you should form for this test. Express each in writing and also in equation form.
• Identify the appropriate statistical test to accept or reject the null hypothesis.
• Calculate the appropriate statistical test values to accept or reject your null and alternative hypotheses.
• What should you tell the Mall of Elbonia's food court stores managers in terms of the mall's high-traffic times and customer tendencies?

Assignment Submission

Compile all of your practical application scenario answers into one Word file (submitted as a .docx file). Copy the Excel or SAS output, including graphics, tables, and so on, into that document. Highlight your findings for these practical applications scenarios in yellow. Submit the file in the assignments area for grading and instructor feedback. Prior to submission, review the eleven questions within the three scenarios as well as the scoring guide to ensure you meet all evaluation criteria.

Mall Time Interview Results

Midweek, Day

66

78

66

32

35

34

88

149

86

145

146

38

95

80

106

42

95

77

98

71

122

125

85

97

33 Midweek, Evening

64

71

174

53

52

96

135

142

149

59

82

118

132

81

111

68

22

50

125

105

92

115

148

66

74 Weekend, Day

64

121

29

147

162

108

61

77

88

131

127

141

176

161

3

82

128

51

81

54

161

158

45

134

38 Weekend, Evening

185

207

203

84

125

184

129

94

182

65

110

139

108

117

125

65

47

88

84

165

86

164

199

83

36

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Sep 13, 2020

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