2. Solve for the best point estimate and confidence interval a. Assume that o = 4.5 and use 95% confidence 70 67 58 60 69 62 70 62 69 59 77 59 52 79 59 59 80 42 60 59 68 40 68 68 56 66 60 40 57 57 70 71 72 54 52 67 62 59 71 72 81 49 45 78 78 69 68 69

A First Course in Probability (10th Edition)
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Author:Sheldon Ross
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Chapter1: Combinatorial Analysis
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Solve for the best point estimate and confidence interval

2. Solve for the best point estimate and confidence interval
a. Assume that o = 4.5 and use 95% confidence
70
67
58
60
69
62
70
62
69
59
77
59
52
79
59
59
80
68
40
68
68
56
66
60
40
57
57
70
71
72
54
52
67
62
59
71
72
81
49
45
78
78
69
68
69
b. The mean age of 20 youth volunteers in a community project is 17.5 years with a standard
deviation of 2 years. If the sample comes from an approximately normal distribution, what
are the point and the interval estimate of the population? Use 99% confidence level.
c. The mean scores of a random sample of 17 students who took a special test is 83.5. If the
standard deviation of the scores is 4.1, and the sample comes from an approximately
normal population, find the point and the interval estimates of the population mean
adopting a confidence level of 95%.
Transcribed Image Text:2. Solve for the best point estimate and confidence interval a. Assume that o = 4.5 and use 95% confidence 70 67 58 60 69 62 70 62 69 59 77 59 52 79 59 59 80 68 40 68 68 56 66 60 40 57 57 70 71 72 54 52 67 62 59 71 72 81 49 45 78 78 69 68 69 b. The mean age of 20 youth volunteers in a community project is 17.5 years with a standard deviation of 2 years. If the sample comes from an approximately normal distribution, what are the point and the interval estimate of the population? Use 99% confidence level. c. The mean scores of a random sample of 17 students who took a special test is 83.5. If the standard deviation of the scores is 4.1, and the sample comes from an approximately normal population, find the point and the interval estimates of the population mean adopting a confidence level of 95%.
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