268 Answered Questions for the topic Stats

03/16/22

#### Non Standard Distributions, Central Limit Theorem

Find the area of the shaded region. The graph to the right depicts IQ scores of​ adults, and those scores are normally distributed with a mean of 100 and a standard deviation of 15. 102 122 A... more

12/16/21

#### Probability Question

A thermostat is set on 70 degrees. A room temperature is distributed normally with the standard deviation of .1. What is the probability that the room temperature will be higher than 70.2 degrees?

10/03/21

#### ASAP: determine all the winning coalitions and find banzhaf power distribution

determine all the winning coalitions and find banzhaf power distribution (Show all work)[16:5,5,11,6,3]

08/10/21

#### 21.7: Find a​ 95% confidence interval for this difference and interpret it in context.

In analyzing the city and highway fuel efficiencies of many cars and​ trucks, the mean difference in fuel efficiencies for the 632 vehicles was 7.36 mpg with a standard deviation of 2.59 mpg. Find... more

08/10/21

#### 21.7: Find a​ 95% confidence interval for this difference and interpret it in context.

In analyzing the city and highway fuel efficiencies of many cars and​ trucks, the mean difference in fuel efficiencies for the 632 vehicles was 7.36 mpg with a standard deviation of 2.59 mpg. Find... more

08/10/21

#### 7.10: What fraction of the variability in potassium is accounted for by the amount of fiber that servings​ contain?

The correlation between a​ cereal's fiber and potassium contents is r=0.904. What fraction of the variability in potassium is accounted for by the amount of fiber that servings​... more

08/10/21

#### 7.10: What fraction of the variability in potassium is accounted for by the amount of fiber that servings​ contain?

The correlation between a​ cereal's fiber and potassium contents is r=0.904. What fraction of the variability in potassium is accounted for by the amount of fiber that servings​... more

08/09/21

#### 7.10: What fraction of the variability in potassium is accounted for by the amount of fiber that servings​ contain?

The correlation between a​ cereal's fiber and potassium contents is r=0.892. What fraction of the variability in potassium is accounted for by the amount of fiber that servings​... more

08/09/21

#### 7.10: What fraction of the variability in potassium is accounted for by the amount of fiber that servings​ contain?

The correlation between a​ cereal's fiber and potassium contents is r=0.892. What fraction of the variability in potassium is accounted for by the amount of fiber that servings​... more

08/09/21

#### 7.3: A newborn was 48 cm long and weighed 3 kg. According to the regression​ model, what was his​ residual? What does that say about​ him?

A least squares regression line was calculated to relate the length​ (cm) of newborn boys to their weight in kg. The line is weight=−6.07+0.1693 length. A newborn was 48 cm long and weighed 3 kg.... more

08/09/21

#### 7.3: A newborn was 48 cm long and weighed 3 kg. According to the regression​ model, what was his​ residual? What does that say about​ him?

A least squares regression line was calculated to relate the length​ (cm) of newborn boys to their weight in kg. The line is weight=−6.07+0.1693 length. A newborn was 48 cm long and weighed 3 kg.... more

08/08/21

#### Find the probability of each event described. Complete parts a through d below.

The soccer​ team's shirts have arrived in a big​ box, and people just start grabbing​ them, looking for the right size. The box contains 6 ​medium, 11 ​large, and 9 ​extra-large shirts. A player... more

08/08/21

#### Find the probability of each event described. Complete parts a through d below.

The soccer​ team's shirts have arrived in a big​ box, and people just start grabbing​ them, looking for the right size. The box contains 6 ​medium, 11 ​large, and 9 ​extra-large shirts. A player... more

08/08/21

#### If he leaves class​ late, there is a 46​% chance that he will miss his train. What is the probability that he gets out of class late and misses the​ train?

A student figures that he has a 51​% chance of being let out of class late. If he leaves class​ late, there is a 46​% chance that he will miss his train. What is the probability that he gets out of... more

08/08/21

#### If he leaves class​ late, there is a 46​% chance that he will miss his train. What is the probability that he gets out of class late and misses the​ train?

A student figures that he has a 51​% chance of being let out of class late. If he leaves class​ late, there is a 46​% chance that he will miss his train. What is the probability that he gets out of... more

08/08/21

#### 13.2: What is the probability that a randomly selected person in the country enjoys cooking or shopping or​ both?

Fifty-four percent of people in a certain country like to cook and 52​% of people in the country like to​ shop, while 22​% enjoy both activities. What is the probability that a randomly selected... more

08/08/21

#### 13.2: What is the probability that a randomly selected person in the country enjoys cooking or shopping or​ both?

Fifty-four percent of people in a certain country like to cook and 52​% of people in the country like to​ shop, while 22​% enjoy both activities. What is the probability that a randomly selected... more

08/08/21

#### 13.1: Suppose that 20​% of people have a dog​, 32​% of people have a cat​, and 8​% of people own both. What is the probability that someone owns a dog or a cat​?

Suppose that 20​% of people have a dog​, 32​% of people have a cat​, and 8​% of people own both. What is the probability that someone owns a dog or a cat​?The probability of a person having a dog... more

08/08/21

#### 13.1: Suppose that 20​% of people have a dog​, 32​% of people have a cat​, and 8​% of people own both. What is the probability that someone owns a dog or a cat​?

Suppose that 20​% of people have a dog​, 32​% of people have a cat​, and 8​% of people own both. What is the probability that someone owns a dog or a cat​?The probability of a person having a dog... more

08/08/21

#### 14.3: What are the mean and standard deviation of his total weekly​ salaries?

An employer pays a mean salary for a​ 5-day workweek of ​$1050 with a standard deviation of ​$136. On the​ weekends, his salary expenses have a mean of ​$350 with a standard deviation of ​$60. What... more

08/08/21

#### 14.3: What are the mean and standard deviation of his total weekly​ salaries?

An employer pays a mean salary for a​ 5-day workweek of ​$1050 with a standard deviation of ​$136. On the​ weekends, his salary expenses have a mean of ​$350 with a standard deviation of ​$60. What... more

08/04/21

#### c15.9: A basketball player has made 80​% of his foul shots during the season. Assuming the shots are​ independent, find the probability that in​ tonight's game he does the following.

A basketball player has made 80​% of his foul shots during the season. Assuming the shots are​ independent, find the probability that in​ tonight's game he does the following.​a) Misses for the... more

08/04/21

#### c15.9: A basketball player has made 80​% of his foul shots during the season. Assuming the shots are​ independent, find the probability that in​ tonight's game he does the following.

A basketball player has made 80​% of his foul shots during the season. Assuming the shots are​ independent, find the probability that in​ tonight's game he does the following.​a) Misses for the... more

08/04/21

#### C17.4: . The sample showed the average loss was ​$8601 with a standard deviation of ​$1405

The housing market has recovered slowly from the economic crisis of 2008.​ Recently, in one large​ community, realtors randomly sampled 48 bids from potential buyers to estimate the average loss in... more

08/04/21

#### C17.4: . The sample showed the average loss was ​$8601 with a standard deviation of ​$1405

The housing market has recovered slowly from the economic crisis of 2008.​ Recently, in one large​ community, realtors randomly sampled 48 bids from potential buyers to estimate the average loss in... more

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