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
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)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Solve for the best point estimate and confidence interval
Transcribed Image Text:2. Solve for the best point estimate and confidence interval
a. Assume that o = 4.5 and use 95% confidence
70
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58
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69
62
70
62
69
59
77
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52
79
59
59
80
68
40
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68
56
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60
40
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57
70
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72
54
52
67
62
59
71
72
81
49
45
78
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69
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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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