You wish to test the following claim (HaHa) at a significance level of α=0.02α=0.02.       Ho:μ1=μ2Ho:μ1=μ2       Ha:μ1>μ2Ha:μ1>μ2 You obtain the following two samples of data. Sample #1 Sample #2 64.1 73.8 62.3 74.5 71.8 82.4 41.2 76.3 45 72.5 84.2 85.7 59.7 72.8 99.6 67.4 78.1 93 81.6 81.6 50.6 99.6 83.8 82 80.8 82.4 54.9 87.3 59.1 65.8 77.4 97.8 57.8 89.8 73.5 65.4 77.7 66.6 84.7 75.6 64.5 53.4 59.8 69.8 62.2 56.3 63.2 55.8 80.3 62.7 56.3 57.7 77.3 73.4 67.3 79.2 69.3 60.8 80.3 64.5 61.6 55.8 66.8 61.4 68 61.4 59.8 61.1 65.2 61.4 73.1 77.8 62.5 69.8 64.5 71.8 70.5 69.6 54.1 70.5 What is the critical value for this test? For this calculation, use the degrees of freedom reported from the technology you are using. (Report answer accurate to three decimal places.) critical value =  What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic =  The test statistic is... in the critical region not in the critical region Correct This test statistic leads to a decision to... reject the null accept the null fail to reject the null Correct As such, the final conclusion is that... There is sufficient evidence to warrant rejection of the claim that the first population mean is greater than the second population mean. There is not sufficient evidence to warrant rejection of the claim that the first population mean is greater than the second population mean. The sample data support the claim that the first population mean is greater than the second population mean. There is not sufficient sample evidence to support the claim that the first population mean is greater than the second population mean.

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Author:Amos Gilat
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You wish to test the following claim (HaHa) at a significance level of α=0.02α=0.02.

      Ho:μ1=μ2Ho:μ1=μ2
      Ha:μ1>μ2Ha:μ1>μ2

You obtain the following two samples of data.

Sample #1 Sample #2
64.1 73.8 62.3 74.5
71.8 82.4 41.2 76.3
45 72.5 84.2 85.7
59.7 72.8 99.6 67.4
78.1 93 81.6 81.6
50.6 99.6 83.8 82
80.8 82.4 54.9 87.3
59.1 65.8 77.4 97.8
57.8 89.8 73.5 65.4
77.7 66.6 84.7 75.6
64.5 53.4 59.8 69.8
62.2 56.3 63.2 55.8
80.3 62.7 56.3 57.7
77.3 73.4 67.3 79.2
69.3 60.8 80.3 64.5
61.6 55.8 66.8 61.4
68 61.4 59.8 61.1
65.2 61.4 73.1 77.8
62.5 69.8 64.5 71.8
70.5 69.6 54.1 70.5



What is the critical value for this test? For this calculation, use the degrees of freedom reported from the technology you are using. (Report answer accurate to three decimal places.)
critical value = 

What is the test statistic for this sample? (Report answer accurate to three decimal places.)
test statistic = 

The test statistic is...

  • in the critical region
  • not in the critical region
Correct



This test statistic leads to a decision to...

  • reject the null
  • accept the null
  • fail to reject the null
Correct



As such, the final conclusion is that...

  • There is sufficient evidence to warrant rejection of the claim that the first population mean is greater than the second population mean.
  • There is not sufficient evidence to warrant rejection of the claim that the first population mean is greater than the second population mean.
  • The sample data support the claim that the first population mean is greater than the second population mean.
  • There is not sufficient sample evidence to support the claim that the first population mean is greater than the second population mean.
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