A sample of size n= 33 has sample mean x = 53 and sample standard deviation s=6.2. Part: 0 / 2 Part 1 of 2 (a) Construct a 99% confidence interval for the population mean μ. Enter the values for the lower and upper limits and the mean to graph. Round the answers to one decimal place. 45.0 45.0 Part: 1 / 2 Part 2 of 2 99% confidence interval 54.5 (b) If the sample size were n=49, would the confidence interval be narrower or wider? The confidence interval would be (Choose one) ▼ narrower wider ☑ 64.0 64.0

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