Solve the problem.
-Among a random sample of 250 college students, the mean number of hours worked per week at non-college related jobs is 14.2. This mean lies 2 standard deviation(s)above the mean of the sampling distribution. If a second sample of 250 students is selected, what is the probability that for the second sample, the mean number
Of hours worked will be greater than 14.2?
A)0.5
B)0.0228
C)0.9772
D)0.0222

Question

Quizplus · Accepted Answer

The mean of the first sample is 2 standard deviations above the mean of the sampling distribution. In a normal distribution, the probability of a value being more than 2 standard deviations above the mean is approximately 0.0228.

Solve the Problem. -Among a Random Sample of 250 College Students, the Mean