Question

The following data represent the weights (in grams) of a random sample of 50 M&M plain candies.
(a) Determine the sample standard deviation weight. Express your answer rounded to three decimal places.
(b) On the basis of the histogram drawn in Section 3.1, Problem 27, comment on the appropriateness of using the Empirical Rule to make any general statements about the weights of M&Ms.
(c) Use the Empirical Rule to determine the percentage of M&Ms with weights between 0.803 and 0.947 gram.
(d) Determine the actual percentage of M&Ms that weigh between 0.803 and 0.947 gram, inclusive.
(e) Use the Empirical Rule to determine the percentage of M&Ms with weights more than 0.911 gram.
(f) Determine the actual percentage of M&Ms that weigh more than 0.911 gram.


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  • CreatedApril 27, 2015
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