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The amount of time that a drive-through bank teller spends on a customer is a random variable with a mean μ=3.2 minutes and a standard deviation σ=1.6 minutes. If a random sample of 64 customers is observed, find the probability that their mean time at the teller's counter is (a) at most 2.7 minutes: (b) more than 3.5 minutes; (c) at least 3.2 minutes but less than 3.4 minutes. | Numerade
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[GET ANSWER] 7.(05.02 MC)Carson's tablet has about 2,000 videos. The distribution of the play times for these videos is skewed heavily to the right, with a mean of 135 seconds and astandard deviation of 25 seconds.Part A: Explain why you cannot accurately calculate the probability that the mean play time is more than 142 seconds for a random sample of 10 videos. (4points)Part B: Suppose you take a random sample of 50 videos instead. Explain how the Central Limit Theorem allows you to find the pr
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