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5 August, 18:52

A student reads that a re - cent poll finds that a 95% confidence interval for the mean ideal weight given by adult American women is 139 (plus or minus) 1.4 pounds. Asked to explain the meaning of this interval, the student says, "95% of all adult American women would say that their ideal weight is between 137.6 and 140.4 pounds." Is the student right? Explain your answer

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  1. 5 August, 20:08
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    Yes, the student is right

    Step-by-step explanation:

    95% confidence interval for the mean ideal weight given by adult American women is 139 ( + or - ) 1.4 pounds

    Mean = 139 pounds

    Error margin = 1.4 pounds

    Lower limit = 139 - 1.4 = 137.6

    Upper limit = 139 + 1.4 = 140.4

    The ideal weight is between 137.6 and 140.4 pounds
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