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The distribution of the lengths of long-stemmed roses is mound – shaped and symmetric with the...

The distribution of the lengths of long-stemmed roses is mound – shaped and symmetric with the mean stem length of 15 inches and standard deviation of 2 inches. According Empirical rule a. _______ percent of the long-stemmed roses have the lengths between 13 inches and 17 inches.

b. _______ percent of long-stemmed roses have the lengths smaller than 13 inches.

c. _______ percent of long-stemmed roses have the lengths between 11 inches and 17 inches.

Math   Statistics-And-Probability   
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