# normal distribution

#### Solved: Use R program : Given that X has a normal distribution with mean 18 and standard deviation 2.5

Given that X has a normal distribution with mean 18 and standard deviation 2.5, find a. $P(X < 15)$; b.…

#### Solved: Combining test scores. The first Stats exam had a mean of 65 and a standard deviation of 10 points; the second had a mea

Combining test scores. The first Stats exam had a mean of 65 and a standard deviation of 10 points; the…

#### Solved: The serum cholesterol levels of 12 to 14-year-olds follow a normal distribution with mean 162 mg/dl and standard deviati

The serum cholesterol levels of 12 to 14-year-olds follow a normal distribution with mean 162 mg/dl and standard deviation 28…

#### Solved: A mechanic sells a brand of automobile tire that has a life expectancy that is normally distributed, with a mean life of

A mechanic sells a brand of automobile tire that has a life expectancy that is normally distributed, with a mean…

#### Solved: 7.18 Vail Resorts pays part-time seasonal employees at ski resorts on an hourly basis. At a certain mountain, the hourly

7.18 Vail Resorts pays part-time seasonal employees at ski resorts on an hourly basis. At a certain mountain, the hourly…

#### Solved: On the average, there are 500 mg of aspirin in an “Extra Strength” aspirin tablet. Suppose the random variable assigning amount of aspirin

On the average, there are 500 mg of aspirin in an "Extra Strength" aspirin tablet. Suppose the random variable assigning…

#### Solved: Beer bottles are filled so that they contain an average of 330 ml of beer in each bottle. Suppose tha

Beer bottles are filled so that they contain an average of 330 ml of beer in each bottle. Suppose that…

#### Solved-At the end of the spring semester, the Dean of Students sent a survey to the entire freshman class. One question asked t

At the end of the spring semester, the Dean of Students sent a survey to the entire freshman class. One…