MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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QUESTION 10 Stats

  1. A local church parish wants to raise money to add to their campus. In a sample from a previous fund raising campaign, the parish found that of the 120 people in the sample they contacted, that 80 actually contributed money. Of those that contributed money, the average contribution was $850 with a standard deviation of $350. In the recent fundraising campaign, a sample of 90 people revealed that 52 have contributed money with an average contribution of $925 and a standard deviation of $420. When testing (at the 5% level of significance) whether the proportionof peole who are contributing has increased, the p-value of the test statistic is 0.143? What is your conclusion concerning the null that the contributions have increased?
   

Reject the null hypothesis

   

Fail to reject the null hypothesis

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