A researcher wishes to estimate with 99% confidence, the population proportion of adults who are confident with their country banking system. his estimate must be accurate within 95% of the population proportion.

A machine used to fill a gallon-sized paint cans is regulated so that the amount of paint dispensed has a mean of 140 ounces and a standard deviation of 0.30 ounce. you randomly selected 45 cans and carefully measure the contents. The sample mean of the cans is 139.9 ounces. Does the machine need to reset?

\f\f