Suppose Burger King has run a major advertising campaign in the hopes of increasing monthly sales. To investigate the effectiveness of this campaign, Burger King randomly selected seven restaurants and recorded the monthly sales before and after the advertising. The following data represents these sales figures in thousands of dollars. Restaurant 1 2 3 4 5 6 7 After $127 $122 $145 $156 $160 $134 $108 Before $107 $110 $143 $168 $145 $125 $98 If Population 1 is defined as the year 2012 and Population 2 is defined as the year 2011, the mean of the matched-pair differences is ________. Question 7 options: 1) 8.0 2) 9.7 3) 11.9
Restaurant
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1
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2
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3
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4
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5
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6
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7
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After
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$127
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$122
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$145
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$156
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$160
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$134
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$108
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Before
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$107
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$110
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$143
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$168
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$145
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$125
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$98
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If Population 1 is defined as the year 2012 and Population 2 is defined as the year 2011, the
Question 7 options:
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Suppose Burger King has run a major advertising campaign in the hopes of increasing monthly
sales. To investigate the effectiveness of this campaign, Burger King randomly selected six
restaurants and recorded the monthly sales before and after the advertising. The following data
represents these sales figures in thousands of dollars.
Restaurant 1 2 3 4 5 6
After $123 $122 $145 $156 $160 $134
Before $107 $110 $143 $168 $145 $125
If Population 1 is defined as sales after the advertising campaign and Population 2 is defined as
sales before the advertising campaign, the
A) 11.9
B) 13.2
C) 7.0
D) 6.1
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