You wish to test the following claim (Ha) at a significance level of α=0.002. Ho:μ1=μ2 Ha:μ1



You wish to test the following claim (Ha) at a significance level of α=0.002.


      Ho:μ1=μ2
      Ha:μ1<>


You obtain the following two samples of data.











Sample #1Sample #2






























































































72.682.878.468.9
76.775.377.659.4
78.481.987.658.5
65.377.485.457.2
75.158.570.370.5
74.384.672.274.9
79.574.786.366.4
71.379.267.278.6
80.168.775.176.5
83.365.976.381.5
63.777.486.378.4
77.970.389.671.5
57.285.481.585.4
75.581.959.476.1
73.780.470.557.2

























































































74.688.564.167.6
66.865.967.670.1
78.290.268.680.8
71.57273.666.4
66.873.464.871.3
83.476.183.170.8
86.780.671.887.8
66.482.87579.4
80.272.281.190.2
72.670.178.669.8
75.4788574.6
75.772.672.275
76.386.786.275.9
79.878.4





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


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


The p-value is...


  • less than (or equal to) αα

  • greater than αα






This test statistic leads to a decision to...


  • reject the null

  • accept the null

  • fail to reject the null






As such, the final conclusion is that...


  • There is sufficient evidence to warrant rejection of the claim that the first population mean is less than the second population mean.

  • There is not sufficient evidence to warrant rejection of the claim that the first population mean is less than the second population mean.

  • The sample data support the claim that the first population mean is less than the second population mean.

  • There is not sufficient sample evidence to support the claim that the first population mean is less than the second population mean.




Jun 03, 2022
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