## A factory produces a pack of peanuts. A researcher gets sample of 50 packs and computes the mean weight to be 57.2 grams. Based on a previous study, the population standard deviation is 0.15 grams. Round off all answers to two decimal places with complete

A factory produces a pack of peanuts. A researcher gets sample of 50 packs and computes the mean weight to be 57.2 grams. Based on a previous study, the population…

## Patty, a branch manager of a bank, would like a quick estimate of the mean checking account balance of all checking account customers. A random sample of checking 32 account balances results in a sample mean of \$312,590.50 and a standard deviation of \$52,

Patty, a branch manager of a bank, would like a quick estimate of the mean checking account balance of all checking account customers. A random sample of checking 32 account…

## Jacob wants to estimate the mean length of time (in minutes) all College students spend reading online journal articles. To determine this estimate, he took a random sample of 15 people and obtained the following results: 40, 110, 56, 20, 15, 10, 82, 60,

Jacob wants to estimate the mean length of time (in minutes) all College students spend reading online journal articles. To determine this estimate, he took a random sample of 15…