Maddie Liguori

Newest questions and responses by Maddie Liguori
  1. statistics

    A supplier of plastic pellets claims that when the plastic is pressed into wafers of uniform thickness, they will have a mean breaking strength of 165 newtons and a standard deviation of 5 newtons. An engineer at the company randomly selects wafers from 12

    asked on March 1, 2011
  2. statistics

    The income of college students is normally distributed with a mean income per year is $12,000 and a standard deviation of $6,000. a)If we randomly sample 25 college students, what is the probability that the average income of our sample is less than

    asked on March 1, 2011
  3. statistics

    The distribution of the heights of men in the U.S. is normally distributed with a mean of 70 inches and a standard deviation of 5 inches. a) What is the probability of an american male being less than 60 inches tall? b) What is the probability of an

    asked on March 1, 2011