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dagilbert
11-09-2009, 05:12 PM
The pulse rates below were recorded over a 30-second time period, both before and after a physical fitness regimen. The data is shown below for 8 randomly selected participants. Is there sufficient evidence to conclude that a significant amount of improvement took place? Assume pulse rates are normally distributed. Test using = 0.10.
• State the null and alternate hypotheses
• Calculate the mean and standard deviation
• Determine which test statistic applies, and calculate it
• Determine the critical value(s).
• State your decision: Should the null hypothesis be rejected?
Before 56 38 56 33 38 51 57 55
After 56 38 64 37 43 55 63 61

Subhotosh Khan
11-09-2009, 05:29 PM
The pulse rates below were recorded over a 30-second time period, both before and after a physical fitness regimen. The data is shown below for 8 randomly selected participants. Is there sufficient evidence to conclude that a significant amount of improvement took place? Assume pulse rates are normally distributed. Test using = 0.10.
• State the null and alternate hypotheses
• Calculate the mean and standard deviation
• Determine which test statistic applies, and calculate it
• Determine the critical value(s).
• State your decision: Should the null hypothesis be rejected?
Before 56 38 56 33 38 51 57 55
After 56 38 64 37 43 55 63 61
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