Posted by **lora** on Sunday, July 15, 2012 at 1:50pm.

For each probability and percentile problem, draw the picture.

A random number generator picks a number from 1 to 9 in a uniform manner.

1) Give the distribution of X.

X =

2) Enter an exact number as an integer, fraction, or decimal.

f(x) = where <=x=>

3) Enter an exact number as an integer, fraction, or decimal.

μ =

4)σ =

5)P(3.25 < X < 7.5) =

6)P(X > 3.67) =

7)P(X > 6 | X > 3) =

8)Find the 80th percentile. (Round your answer to one decimal place.)

Thank you

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