14) 99% confidence Interval (in Inches) for the mean height of a population is 65.92 < p < 67.48. This result is based on a sample of size 169. If the confidence interval 66.13 < p < 67.27 is obtained from the same sample data, what is the degree of confidence? (Hint: you will first need to find the sample mean and sample standard deviation). (Spts)
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We know that the sample size is 169, so: Sample mean = 65.92 Sample standard deviation = (67.48 - 65.92) / (2.58) = 0.78 Note that we used the formula for the 99% confidence interval, which gives us the margin of error (in this case, 0.78) and allows us to Show more…
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