The distances in miles driven by a sample of nine different cars using 13 gallons of gasoline were 174, 201, 271, 208, 196, 340, 214, 236, a

Question

The distances in miles driven by a sample of nine different cars using 13 gallons of gasoline were 174, 201, 271, 208, 196, 340, 214, 236, and 385. Find the mean and the standard deviation for the distances traveled. How many cars fall within one standard deviation of the mean?

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RI SƠ 6 mins 2021-07-22T22:28:22+00:00 1 Answers 0 views 0

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    2021-07-22T22:30:03+00:00

    When You order the numbers you get

    174 196 201 208 214  236 271 340 385

    To get the mean, you add up all the numbers

    Sum:2225

    Then you divide it by how many test subjects there are (9 cars)

    2225÷9=247.222222222 Which is your mean

    Q1 is between 196 and 201

    Q3 is between 271 and 340

    If you get the mean of both, Q1 would be 198.5 and Q3 is 305.5

    The amount of cars between them is 6

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