Question 315264
Based on the Nielsen ratings, the local CBS affiliate claims its 11:00 PM newscast reaches 41 % of the viewing audience in the area. In a survey of 100 viewers, 36% indicated that they watch the late evening news on this local CBS station.
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30. 	What is the null hypothesis?
Ho: p >= 0.41
Ha: p < 0.41
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31. 	What is the alternate hypothesis?
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32. 	What is the sample proportion?
sample proportion: 0.36
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33. 	What is the critical value if a = 0.01 ?
invNorm(0.01) = -2.3263
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34.	 What is the z-statistic?
z(0.36) = (0.36-0.41)/sqrt{0.41*0.59/100) = -1.0166
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35. 	What is the critical value if the level of significance is 0.10?
invNorm(0.10) = -1.2816
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36. 	What is your decision if a = 0.01
Since the test stat is not in the reject interval, fail to reject Ho.
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Cheers,
Stan H.