The average weight of a particular box of crackers is 33.0 ounces with a standard deviation of 1.3 ounce. The weights of the boxes are normally distributed. a. What percent of the boxes weigh more than 31.7 ounces? (Round your answer to the nearest hundredth percent.) b. What percent of the boxes weigh less than 29.1 ounces? (Round your answer to the nearest hundredth percent.)
Added by Larry A.
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7 ounces: \[z = \frac{31.7 - 33}{1.3} = -1\] Show more…
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