Rhe frequency distribution summarizes a sample of times in, Ask an Expert

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Rhe frequency distribution summarizes a sample of times (in minutes) between eruptions of a cretain geyser. Find the approximate population mean and approximate population standard deviation of the data.

Time Frequency

40-49 8

50-59 43

60-69 25

70-79 7

80-89 104

90-99 12

100-109 1

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