Normal Distributions Answers

In a binomial experiment, if there are two possible outcomes and P(S) = 0.36, what is P(F)?

Which of the following represents the probability of 3 successes in 5 trials?

A set of data is normally distributed with a mean of 64 and a standard deviation of 2.5. What percent of the data is in the interval 64-66.5?

Suppose that you ask three friends to go to the mall. Each one has a 0.80 chance of saying yes. What is the probability that all three friends will say they can go to the mall with you?

Four students took a national standardized test for which the mean was 500 and the standard deviation was 100. If a student’s z-value was 1.75 on the test, what was the student’s score?

A set of data is normally distributed with a mean of 40 and a standard deviation of 2. What percent of the data is in the interval 38-42?

The heights of 500 students at a local school were recorded and found to be approximated by the normal curve below. Which answer could represent the mean and standard deviation for these data?

The normal curve with a mean of 0 and standard deviation of 1 is called ________________

Suppose the heights of adult men are normally distributed. The heights of a sample of 30 men are shown below, in inches.65, 83, 69, 67, 69, 67, 67, 72, 85, 68, 73, 65, 67 ,65, 72, 71, 67, 73, 68, 72, 61, 75, 66, 78, 65, 71, 68, 76, 67, 68.What is the mean and standard deviation of this sample?

The life expectancy (in hours) of a fluorescent tube is normally distributed with a mean 8000 and a standard deviation 1000. Find the probability that a tube lasts for more than 11000 hours.