Exam 6: Continuous Probability Distributions

The weight of football players is normally distributed with a mean of 200 pounds and a standard deviation of 25 pounds.What is the minimum weight of the middle 95% of the players?

z is a standard normal random variable.The P (1.41 < z < 2.85) equals

The uniform, normal, and exponential distributions

In a normal distribution, it is known that 27.34% of all the items are included from 100 up to the mean, and another 45.99% of all the items are included from the mean up to 145.Determine the mean and the standard deviation of the distribution.

The weight of football players is normally distributed with a mean of 200 pounds and a standard deviation of 25 pounds.The probability of a player weighing less than 240 pounds is

An experiment consists of measuring the speed of automobiles on a highway by the use of radar equipment.The random variable in this experiment is speed, measured in miles per hour.This random variable is a _____ random variable.

There is a lower limit but no upper limit for a random variable that follows the _____ probability distribution.

The assembly time for a product is uniformly distributed between 2to 10 minutes.The probability of assembling the product in 4minutes or more is

What is the probability that x is less than 5, given the function below? f(x) = (1/10) e^-x/10 x 0

For any continuous random variable, the probability that the random variable takes on exactly a specific value is

The assembly time for a product is uniformly distributed between 6 to 10 minutes.The expected assembly time (in minutes) is

The probability distribution that can be described by just one parameter is the​

Given that z is a standard normal random variable, what is the value of z if the area to the left of z is 0.0119?

A professor at a local university noted that the exam grades of her students were normally distributed with a mean of 73 and a standard deviation of 11.If 69.5 percent of the students received grades of C or better, what is the minimum score of those who received C's?

z is a standard normal random variable.The P (1.20 z 2.10) equals

The center of a normal curve

The life expectancy of a particular brand of tire is normally distributed with a mean of 40,000 and a standard deviation of 5,000 miles.What percentage of tires will have a life of 35,000 to 45,000 miles?

In a standard normal distribution, the probability that Z is greater than zero is

x is a normally distributed random variable with a mean of 6 and a variance of 4.The probability that x is greater than 8.75 is

Which of the following is a characteristic of the standard normal probability distribution?