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A study finds that the carapace length of an adult spider is normally distributed with a...

A study finds that the carapace length of an adult spider is normally distributed with a mean of 19.13 mm and a standard deviation of 1.57 mm. Let x denote carapace length for the adult spider.

A. The percentage of adult spiders that have carapace lengths between 17 mm and 18 mm is equal to the area under the standard normal curve between ? and ?

B. The percentage of adult spiders that have carapace lengths exceeding 22 mm is equal to the area under the standard normal curve that lies to the right of ?

Math   Statistics-And-Probability   
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