# Month: February 2021

#### Solved (Free): A car dealer wants to estimate the price its competitors charge for similar cars

A car dealer wants to estimate the price its competitors charge for similar cars. The dealer wants to be 95%…

#### Solved (Free): As a marketing director for a local university, you want to advertise the mean salary of your graduates

As a marketing director for a local university, you want to advertise the mean salary of your graduates. As an…

#### Solved (Free): Managers at an automobile manufacturing plant would like to estimate the mean completion time of an assembly line operation

Managers at an automobile manufacturing plant would like to estimate the mean completion time of an assembly line operation. The…

#### Solved (Free): A researcher wishes to estimate, with 99% confidence, the population proportion of adults who are confident with their

A researcher wishes to estimate, with 99% confidence, the population proportion of adults who are confident with their country's banking…

#### Solved: A retailer wants to estimate the proportion of customers entering their website actually buy something at the website

A retailer wants to estimate the proportion of customers entering their website actually buy something at the website. The company…

#### Solved: A researcher wishes to estimate the percentage of adults who support abolishing the penny

A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size sample should be obtained…

#### Solved: The state tourism commission wants to estimate the average amount out-of-state tourists spend when traveling

The state tourism commission wants to estimate the average amount out-of-state tourists spend when traveling. The commission wants to be…

#### Solved: A gigantic warehouse located in Tampa, Florida, stores approximately 60 million empty aluminum beer and soda cans

A gigantic warehouse located in Tampa, Florida, stores approximately 60 million empty aluminum beer and soda cans. Recently, a fire…

#### Solved: What sample size would you need to construct a 96 percent confidence interval around the proportion for voter turnout during the next election

What sample size would you need to construct a 96 percent confidence interval around the proportion for voter turnout during…

#### Solved: Suppose the U.S. president wants an estimate of the proportion of the population who support his current policy toward revisions in the health care system

Suppose the U.S. president wants an estimate of the proportion of the population who support his current policy toward revisions…