Mathematics, 17.04.2020 01:53, sanam3035

A random sample of 25 Apple (the company) customers who call Apple Care Support line had an average (X) wait time of 187 seconds with a sample standard deviation (s) of 50 seconds. The goal is to construct a 90% confidence interval for the average (u) wait time of all Apple customers who call for support. Assume that the random variable, wait time of Apple customers (denoted by X), is normally distributed. The standard error (SE) of X is a. 2 b. 50 C. 10d. 37

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A random sample of 25 Apple (the company) customers who call Apple Care Support line had an average...