The time needed to complete the final examination of MGSC 301 is normally distributed with a mean of 120 minutes and a standard deviation of 12 minutes.
a. What is the probability that a student will finish the examination in two hours or more?
b. What is the probability that a student will finish the examination in more than 100 minutes but less than 150 minutes?
c. What is the probability that a student will finish the examination in more than 140 minutes?
Solution Preview
The time needed to complete the final examination of MGSC 301 is normally distributed with a mean of 120 minutes and a standard deviation of 12 minutes.
a) What is the probability that a student will finish the examination in two hours or more?
Mean=2 hours = 120 minutes
Probability of exceeding mean = 50% as the normal distribution is symmetrical
... Based on the test, we could not conclude that s<0.035. Thanks. Tony. The normal distribution to approximate binomial distributions are examined. ...
... a. A normal distribution is any distribution that is not unusual. False. There are other distributions that are not unusual; for example, uniform distribution...
Hypergeometric distribution and normal distribution. 1. The random variable x has a hypergeometric distribution, and the population contains 12 items. ...
Which choice is another term that can be used to describe a normal distribution? ... 3) Find the probability P(z < 0.37) using the standard normal distribution. ...
Probability Problems: Normal distribution, Binomial distribution. A)The mean of a normal distribution is 400 pounds. The standard deviation is 10 pounds. ...
... know if the samples follow a normal distribution? ... good model for the distribution of measurements ... approximations to various other distributions - in particular ...
