Mathematics
Mathematics, 24.04.2020 20:31, misscheoneyo

A company sells sunscreen in 450 milliliter (ml) tubes. In fact, the amount of lotion in a tube varies according to a normal distribution with mean μ=447 ml and standard deviation σ=5 ml. Suppose a store which sells this sunscreen advertises a sale for 4 tubes for the price of 3.

Consider the average amount of lotion from a SRS of 4 tubes of sunscreen and find:

(a) The standard deviation of the average, x¯ :

(b) The probability that the average amount of sunscreen from 4 tubes will be less than 441 ml.

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Answers: 3

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A company sells sunscreen in 450 milliliter (ml) tubes. In fact, the amount of lotion in a tube vari...

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