Statistics - HELP

dagilbert

New member
Joined
Nov 9, 2009
Messages
6
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

Super Moderator
Staff member
Joined
Jun 18, 2007
Messages
18,191
dagilbert said:
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
Please share with us your work, indicating exactly where you are stuck - so that we know where to begin to help you
 
Top