(Step-by-Step) For each of the following first compute the sx bar ; then compute and compare the computed t value to the critical t value at the .05 level.
Question: For each of the following first compute the sx bar ; then compute and compare the computed t value to the critical t value at the .05 level. (Use the means ( X bar) and SD s for the four Universities that were calculated in practice work for Chapters 4 and 5.)
- Would you retain or reject the null hypothesis that the population mean for University A is 12?
- Would you retain or reject the null hypothesis that the population mean for University B is 12?
- Would you retain or reject the null hypothesis that the population mean for University C is 7?
- Would you retain or reject the null hypothesis that the population mean for University D is 7?
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