Find the given percentiles for the sum of the sample

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Question: The mean number of minutes for app engagement by a table use is 8.2 minutes. Suppose the standard deviation is one minute. Take a sample size of 70.

a. What is the probability that the sum of the sample is between seven hours and ten hours? What does this mean in context of the problem?

b. Find the 84th and 16th percentiles for the sum of the sample. Interpret these values in context.

Reference no: EM131643807

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