Question

In: Statistics and Probability

With this information, you decided that a mandated seminar on exercise is necessary as part of...

  1. With this information, you decided that a mandated seminar on exercise is necessary as part of new student orientation. To determine if this was effective, you give a pre-and post-term questionnaire to determine if students change their exercise status as a result of the seminar. You find the information below. Run the appropriate chi-square test.

Exercised Regular

After the Seminar

Exercised Regularly before

Seminar

Yes

No

Yes

No

193

58

40

179



1. State the null and the alternative

2. Determine a at a-.05

3. Select Chi square tool (I think you would use MnNemar's test)

4. Find the Critical Value

5. Reject or Fail to reject

6. state your conclusion

Solutions

Expert Solution

1. State the null and the alternative

Ho:f students do not change their exercise status as a result of the seminar.

Ha: students change their exercise status as a result of the seminar.

alpa=0.05

3. Select Chi square tool (I think you would use MnNemar's test)

Calculation of chi sq test statistic

4. Find the Critical Value

df=(r-1)(c-1)

r==no of rows=2

c=no of columns=2

df=(2-1)(2-1)

df=1

critical value in excel

=CHISQ.INV.RT(0.05,1)

=3.841458821

5. Reject or Fail to reject

Test statistic>Critical chi sq value

5. Reject or Fail to reject

160.81>3.84

Reject Ho

6. state your conclusion

There is suffcient evidence at 5% level of significance to conlcude that students change their exercise status as a result of the seminar.


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