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A researcher wishes to estimate the mean time that salespersons are able to talk to a potential customer. A random sample of 36 salespersons were

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A researcher wishes to estimate the mean time that salespersons are able to talk to a potential customer. A random sample of 36 salespersons were asked how long on average they were able to talk to the potential customer. Their answers revealed a mean of 8.5 minutes. The population standard deviation is 3 minutes. Construct a 90% condence interval for the population mean, the time it takes a salesperson to talk to a potential customer. USE THE TABLES POSTED IN CANVAS TO SOLVE THIS PROBLEM. Round your answer to TWO DECIMAL PLACES. Example: If the answer is 85.80

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