Statistic

If the IQ scores are normally distributed with a mean of 100 and a standard deviation of 15.

  What is the 75^th percentile for the IQ score distribution?

  Find the probability that a randomly selected person has an IQ score between 88 and 115. (Show work and round the answer to 4 decimal places)

  Find the probability that a sample of 36 random selected people has a mean IQ score greater than 105.  (Show work and round the answer to 4 decimal places)

  There are 10 members in the UCLA Stats Club.

  The Club must select a president, a vice president and a treasurer for the school year. How many different ways can the officers be selected?   (Show work)

  The Club is sending a delegate of 2 members to attend the 2015 Joint Statistical Meeting in Seattle. How many different ways can the delegate be selected? (Show work)