The data that follow are 30 waiting times, in minutes, between eruptions of a geyser in a national park. 57 81 5979 65 7

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The Data That Follow Are 30 Waiting Times In Minutes Between Eruptions Of A Geyser In A National Park 57 81 5979 65 7 1 (32.87 KiB) Viewed 61 times

The data that follow are 30 waiting times, in minutes, between eruptions of a geyser in a national park. 57 81 5979 65 74 52 78 62 77 59 75 87 68 68 64 81 47 77 66 87 60 78 89 81 55 76 88 64 72 in USE SALT (a) Calculate the range (in min). min (b) Use the range approximation to approximate the standard deviation in min) of these 30 measurements. min (c) Calculate the sample standard deviation s. (Round your answer to four decimal places.) S = min (d) What proportion of the measurements lie within two standard deviations of the mean? Within three standard deviations of the mean? (Round your answers to two decimal places.) Interval Actual Percentage x + 2s % x + 3s % Do these proportions agree with the proportions given in Tchebysheff's Theorem? O Yes O NO Need Help? Read It