# Month: April 2021

#### Solved (Free): A group of students at a school takes a history test. The distribution is normal with a mean of 25, and a standard deviation of 4

A group of students at a school takes a history test. The distribution is normal with a mean of 25,…

#### Solved (Free): Suppose that the distance of fly balls hit to the outfield (in baseball) is normally distributed with a mean of 250 feet and a standard deviation of 50 feet

Suppose that the distance of fly balls hit to the outfield (in baseball) is normally distributed with a mean of…

#### Solved (Free): The distribution of systolic and diastolic blood pressure for female diabetes between the ages of 30 and 34 have unknown means

The distribution of systolic and diastolic blood pressure for female diabetes between the ages of 30 and 34 have unknown…

#### Solved (Free): Data from the Framingham study allow us to compare the distribution of initial serum cholesterol levels for two population of males

Data from the Framingham study allow us to compare the distribution of initial serum cholesterol levels for two population of…

#### Solved (Free): A committee of three people is to be selected at random from a council consisting of five men and three women

A committee of three people is to be selected at random from a council consisting of five men and three…

#### Solved (Free): As a measure of intelligence, mice are timed when going through a maze to reach a reward of food. The time (in seconds) required for any mouse

As a measure of intelligence, mice are timed when going through a maze to reach a reward of food. The…

#### Solved (Free): A company produces two products that are produced on 2 assembly lines. Assembly line 1 has 100 available hours and assembly line 2 has 42 available hours

A company produces two products that are produced on 2 assembly lines. Assembly line 1 has 100 available hours and…

#### Solved (Free): It is estimated that 50% of emails are spam emails. Some software has been applied to filter these spam emails before they reach your inbox

It is estimated that 50% of emails are spam emails. Some software has been applied to filter these spam emails…

#### Solved (Free): A survey was conducted on a random sample of 1,000 Baltimore residents. Residents were asked whether they have health insurance. 650 individuals surveyed

A survey was conducted on a random sample of 1,000 Baltimore residents. Residents were asked whether they have health insurance.…

#### Solved (Free): Richard has just been given a ten-question multiple choice test in his history class. Each question has five answers only one of which is correct

Richard has just been given a ten-question multiple choice test in his history class. Each question has five answers only…