Mathematics, 30.03.2020 23:49 QueenNerdy889
A consumer affairs investigator records the repair cost for 44 randomly selected TVs. A sample mean of $54.41$ 54.41 and standard deviation of $28.89$ 28.89 are subsequently computed. Determine the 90%90% confidence interval for the mean repair cost for the TVs. Assume the population is approximately normal. Step 1 of 2 : Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places.
Answers: 3
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The random variable x represents the number of phone calls an author receives in a day, and it has a poisson distribution with a mean of 8.7 calls. what are the possible values of x
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A consumer affairs investigator records the repair cost for 44 randomly selected TVs. A sample mean...
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