SOLUTION: 1. A random sample of 10 women was made to undergo a reducing program for 6 months. Their weights in pounds taken before and after undergoing the program are tabulated below. B

Algebra ->  Probability-and-statistics -> SOLUTION: 1. A random sample of 10 women was made to undergo a reducing program for 6 months. Their weights in pounds taken before and after undergoing the program are tabulated below. B      Log On


   

Question 616509: 1. A random sample of 10 women was made to undergo a reducing program for 6 months. Their weights in pounds taken before and after undergoing the program are tabulated below.
Before 164 175 135 165 192 180 175 205 210 208
After 161 170 134 165 188 181 173 195 180 197
Is there a significant decrease in the weights of the women after the program? Test the significance at 0.05 level.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi

Note: 10 women

Using the Excel Data Analysis Tool:

Before: 164 175 135 165 192 180 175 205 210 208

  || m =180.9 and SD = 23.6

 After: 161 170 134 165 188 181 173 195 180 197

 || m = 174.4  and SD = 18.6



  t = 

 degrees of Freedom = (10+10)-2= 18 ... t =.6841, 5% significance level...

(Using t-test Table or t-test Calculator)

We can conclude that there is NO significant decrease in weight after the program