Question content area top Part 1 A simple random sample of size n=40 is drawn from a population. The sample mean is found to be x=120.9 and the sample standard deviation is found to be s=13.3. Construct a 99% confidence interval for the population mean. Question content area bottom Part 1 The lower bound is enter your response here. (Round to two decimal places as needed.) Part 2 The upper bound is
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The 99% critical value is t_{0.995,39} ≈ 2.704. The standard error is s/√n = 13.3/√40 ≈ 13.3/6.3249 ≈ 2.102. Show more…
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