Question

In: Statistics and Probability

You own two small gift shops, one in City A and one in City B. You...

You own two small gift shops, one in City A and one in City B. You are interested in which city spends more on Valentine's day gifts. So you test the claim that the mean amount spent in City A is greater than the mean amount spent in City B

You wish to test the claim that the mean amount spent in City A is greater than the mean amount spent in City B at a significance level of α=0.05α=0.05.     

You obtain the following two samples of data from each city. Each data point is the amount of a Valentine's Day gift purchase.

City A City B
57.4
50.7
60.1
30.4
42.7
53.5
39.1
51.4
59.0
61.4
47.2
61.4
50.0
54.8
39.5
58.2
28.4
26.4
68.7
21.0
22.7
65.4
18.1
71.4
76.8
31.4
29.0
56.2
  1. What is the test statistic for this sample?

    test statistic =  Round to 4 decimal places.
  2. What is the p-value for this sample?

    p-value =  Round to 4 decimal places.
  3. The p-value is...
    • less than (or equal to) αα
    • greater than αα

  4. This test statistic leads to a decision to...
    • reject the null
    • accept the null
    • fail to reject the null

  5. As such, the final conclusion is that...
    • There is sufficient evidence to warrant rejection of the claim that the mean amount spent in City A is greater than the mean amount spent in City B.
    • There is not sufficient evidence to warrant rejection of the claim that the mean amount spent in City A is greater than the mean amount spent in City B.
    • The sample data support the claim that the mean amount spent in City A is greater than the mean amount spent in City B.
    • There is not sufficient sample evidence to support the claim that the mean amount spent in City A is greater than the mean amount spent in City B.

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