SOLUTION: Members of the general adult population volunteer an average of 4.2 hours per week. A random sample of 20 female college students and 18 male college students produced the results
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Question 327560: Members of the general adult population volunteer an average of 4.2 hours per week. A random sample of 20 female college students and 18 male college students produced the results given in the table below. At the .01 level of significance, is there sufficient evidence to conclude that a difference exists between the mean number of volunteer hours per week for male and female college students?
Females Males
Sample size 20 18
Sample mean 3.8 2.5
Sample variance 3.5 2.2
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Members of the general adult population volunteer an average of 4.2 hours per week. A random sample of 20 female college students and 18 male college students produced the results given in the table below. At the .01 level of significance, is there sufficient evidence to conclude that a difference exists between the mean number of volunteer hours per week for male and female college students?
Females Males
Sample size 20 18
Sample mean 3.8 2.5
Sample variance 3.5 2.2
------------------------------
Ho: u(male)-u(woman) = 0
Ho: u(male)-u(woman) is not 0
I ran a 2-Sample T test and got the following:
test statistic: t = 2.3845
p-value + 0.0226
df = 35.47
---
Conclusion: Reject Ho at 5% significance level.
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Cheers,
Stan H.
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