7.1 There is concern about the speed of automobiles traveling over a particular stretch of highway. For
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7.1 There is concern about the speed of automobiles traveling over a particular stretch of highway. For a random sample of 28 automobiles, radar indicated the following speeds, in miles per hour:
58 63 68 57 56 72 58 69 53 55 61 66 51 59 54 64 58 57 66 61 65 70 63 65 57 56 61 59
a. Check for evidence of nonnormality.
b. Find a point estimate of the population mean that is unbiased and efficient.
c. Use an unbiased estimation procedure to find a point estimate of the variance of the sample mean.
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Related Book For
Essential Mathematics And Statistics For Science
ISBN: 9780470694480
2nd Edition
Authors: Graham Currell, Dr. Antony Dowman
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