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

• 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