Assume that a sample is used to estimate a population mean μμ. Find the 99.5% confidence interval for a sample of size 980 with a mean of 61.7 and a standard deviation of 7.7. Enter your answer as a tri-linear inequality accurate to one decimal place (because the sample statistics are reported accurate to one decimal place). < μμ < Answer should be obtained without any preliminary rounding. However, the critical value may be rounded to 3 decimal places.
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We are given the sample size (n = 980), sample mean (x̄ = 61.7), and sample standard deviation (s = 7.7). Show more…
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