A random sample is selected of working adults living in CAlgary, Canada. They were asked how long, in minutes is their typical daily commute. The resulting sample mean was 28.5 minutes and the resulting...

A random sample is selected of working adults living in CAlgary, Canada. They were asked how long, in minutes is their typical daily commute. The resulting sample mean was 28.5 minutes and the resulting...

On a(n) 25-problem test, how many ways can a person get 8 problems correct and 17 problems wrong?

It is estimated that 80% all twenty-year-old men have weights ranging from 140 to 150 lb. Assuming the weight distribution can be adequately modeled by a normal distribution with mean 145 lb and standard...

The average number of shipments that arrive at a landing area within a depot is two per hour during a regular business day. These shipments arrive randomly, and are not related to each other in any...

Students in a college course take a common final exam. The exam scores are normally distributed with a mean of 76 and a standard deviation of 8. Bob scored an 88.What percent of students scored...

What is the probability of reaction time for less than 45 sec / reaction time between 30 and 45 sec./ Reaction time is more than 70 sec.

How many hours did mary sleep last night? is that a Statistical question.

The question on the study guide is as follows: IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. Joe has an IQ that is higher than 99% of people. What...

A basketball team has won 70% of its games so far this season. What is the probability that it will win 8 of its next 10 games?

A nurse at a local hospital is interested in estimating the birth weight of infants. How large a sample must she select if she desires to be 99% confident that the true mean is within 2 ounces of...

A sample of size 50 is selected from a normal distribution having a mean of 95 and a standard deviation equal to 15. What is the probability of selecting a sample having a mean exceeding 100?

please provide the solution and the steps prior

The times per workout an athlete uses a stairclimber are normally distributed, with a mean of 20 minutes and a standard deviation of 5 minutes. An athlete is randomly selected. Find the probability...

Suppose ACT Reading scores are normally distributed with a mean of 21.4 and a standard deviation of 6.4. A university plans to award scholarships to students whose scores are in the top 7%. What is...

please help

Claim: H0: ų1= ų2 X1 = 20, s1 = 3, n1 = 16 X2 = 18, s2 = 2.5, n2 = 12

A college offers two courses in Calculus - Calc 1 and calc 2. Last semester, 60.9% of students took calc 1 and the rest took calc 2 ( no student took both the courses). Of the students who took calc...

A large tank of fish from a hatchery is being delivered to a lake the hatchery claims that the mean length of the tank is 15 in and the standard deviation population is unknown. A randomly sample...

i have the answer. I just need a second opinion to do it and see if i gt the same answer as them

akili has two tests, the probabil that he will pass the first test is 3/4. How he does on the first test affects the second test. If he passes the first test there is a 4/5 chance that he will pass...