# Month: March 2021

#### Solved (Free): A researcher claims the proportion of auto accidents that involve teenage drivers is less than 20%. ABC Insurance Company

A researcher claims the proportion of auto accidents that involve teenage drivers is less than 20%. ABC Insurance Company checks…

#### Solved (Free): In a sample of 200 workers 45% said they missed work because of personal illness. Ten years ago in a sample of 200 workers

In a sample of 200 workers 45% said they missed work because of personal illness. Ten years ago in a…

#### Solved (Free): Percentages of ideal body weight were determined for 18 randomly selected insulin dependent diabetics and are shown below

Percentages of ideal body weight were determined for 18 randomly selected insulin dependent diabetics and are shown below: A percentage…

#### Solved (Free): In an investigation of pregnancy induced hypertension, one group of women with this disorder was treated with low dose aspirin, and the second group was given a placebo

In an investigation of pregnancy induced hypertension, one group of women with this disorder was treated with low dose aspirin,…

#### Solved (Free): Ten peas are generated from parents having the green/yellow pair of genes, so that there is a 0.45 probability

Ten peas are generated from parents having the green/yellow pair of genes, so that there is a 0.45 probability that…

#### Solved (Free): A drug is prepared and found that when a certain quantity is inoculated into mice

A drug is prepared and found that when a certain quantity is inoculated into mice, 25% of the mice become…

#### Solved (Free): A student majoring in accounting is trying to decide on a number of firms to which he should apply

A student majoring in accounting is trying to decide on a number of firms to which he should apply. Given…

#### Solved (Free): A federal report find that a lie detector test given to truthful persons have a probability of 0.2 of suggesting that the person is deceptive

A federal report find that a lie detector test given to truthful persons have a probability of 0.2 of suggesting…

#### Solved (Free): The pH level, a measure of acidity, is important in studies of acid rain. For a certain lake

The pH level, a measure of acidity, is important in studies of acid rain. For a certain lake, baseline measurements…

#### Solved (Free): It is estimated that, during the past year, 27% of all adults visited a therapist and 45% of all adults used non-prescription

It is estimated that, during the past year, 27% of all adults visited a therapist and 45% of all adults…