Question

Packaged foods sold at supermarkets are not always the weight indicated on the package. Variability always crops up in the manufacturing and packaging process. Suppose that the exact weight of a "10​-ounce" bag of potato chips is a random variable that has an approximately normal distribution with mean u=10 ounces and standard deviation σ=0.75 ounce. If 2000 ​"10​-ounce" bags of potato chips are chosen at​ random, estimate the number of bags with the following weights.

​(a) 8.58ounces or less	​(b) 9.25 ounces or less	​(c) 10 ounces or less
​(d) 10.75 ounces or less	​(e) 11.5 ounces or less	​(f) 12.25 ounces or less

Answer 1