- 10 50 Students Were Polled And Asked Their Age The Sample Mean Was 23 4 Years And The Sample Standard Deviation Was 7 1 (61.6 KiB) Viewed 41 times
10. 50 students were polled and asked their age. The sample mean was 23.4 years and the sample standard deviation was 7.
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10. 50 students were polled and asked their age. The sample mean was 23.4 years and the sample standard deviation was 7.
10. 50 students were polled and asked their age. The sample mean was 23.4 years and the sample standard deviation was 7.2 years. Assume student ages are approximately normally distributed. Find a 90% confidence interval estimate for the population standard deviation σ. Since the mean and standard deviation are given to tenths place, so should the limits of your interval.
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