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The mean number of words per minute (WPM) read by sixth graders is81 81with a standard deviation of17 17WPM. If130 130sixth graders are randomly selected,

The mean number of words per minute (WPM) read by sixth graders is81

81with a standard deviation of17

17WPM.

If130

130sixth graders are randomly selected, what is the probability that the sample mean would be greater than77.21

77.21WPM? Round your answer to four decimal places.

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