Questions from Statistics

Q: Two thousand brown trout are introduced into a small lake. The

Two thousand brown trout are introduced into a small lake. The lake has a volume of 20,000 cubic meters. Use a table to find the probability that three brown trout are found in any given cubic meter o...

Q: Write the binomial probability in words. Then, use a continuity

Write the binomial probability in words. Then, use a continuity correction to convert the binomial probability to a normal distribution probability. P(54 < x < 64)

Q: 1. Which normal curve has the greatest mean? 2

1. Which normal curve has the greatest mean? 2. Which normal curve has the greatest standard deviation?

Q: The scaled test scores for the New York State Grade 4 Common

The scaled test scores for the New York State Grade 4 Common Core English Language Arts Test are normally distributed. The normal curve shown below represents this distribution. What is the mean test...

Q: 1. Find the cumulative area that corresponds to a z-

1. Find the cumulative area that corresponds to a z-score of -2.19. 2. Find the cumulative area that corresponds to a z-score of 2.17.

Q: Find the area under the standard normal curve to the left of

Find the area under the standard normal curve to the left of z = 2.13.

Q: Find the area under the standard normal curve to the right of

Find the area under the standard normal curve to the right of z = -2.16.

Q: Find the area under the standard normal curve between z = -

Find the area under the standard normal curve between z = -2.165 and z = -1.35.

Q: The average speed of vehicles traveling on a stretch of highway is

The average speed of vehicles traveling on a stretch of highway is 67 miles per hour with a standard deviation of 3.5 miles per hour. A vehicle is selected at random. What is the probability that it i...

Q: What is the probability that the shopper in Example 2 will be

What is the probability that the shopper in Example 2 will be in the supermarket between 31 and 58 minutes? When 200 shoppers enter the store, how many shoppers would you expect to be in the store bet...