SOLUTION: A leading magazine (like Barron's) reported at one time that the average number of weeks an individual is unemployed is 29 weeks. Assume that the length of unemployment is normally

Algebra ->  Probability-and-statistics -> SOLUTION: A leading magazine (like Barron's) reported at one time that the average number of weeks an individual is unemployed is 29 weeks. Assume that the length of unemployment is normally      Log On


   

Question 1193879: A leading magazine (like Barron's) reported at one time that the average number of weeks an individual is unemployed is 29 weeks. Assume that the length of unemployment is normally distributed with population mean of 29 weeks and the population standard deviation of 7 weeks. Suppose you would like to select a random sample of 15 unemployed individuals for a follow-up study. Round the answers of following questions to 4 decimal places.
What is the distribution of
X
?
X
~ N(
29
Correct,
7
Correct)
What is the distribution of
¯
x
?
¯
x
~ N(
29
Correct,
1.8074
Correct)
For 15 unemployed individuals, find the probability that the average time that they found the next job is less than 31 weeks.
Again, I can get the first part of the question (multiple parts) but I keep screwing up the probability portion.

Answer by ikleyn(52848) About Me  (Show Source):
You can put this solution on YOUR website!
.

Look on how your post appears at the forum.

Don't you think that this formatting is terrible ?