Posted by Anonymous on Tuesday, March 30, 2010 at 6:32pm.
A loaf of bread is normally distributed with a mean of 22 ounces and a standard deviation of .5 ounces.
What is the probability that a loaf of bread is < 20.75

Stats  Ashley, Tuesday, March 30, 2010 at 8:50pm
The first thing you have to do is find the z score. z=(20.7522)/.5 The z would be 2.5 Then, to find the probability, you can use your graphing calculator. Hit 2nd, then catalog, then go down to normalpdf. When that comes up, plug in 2.5 and it should give you a probability of .0175.
Hope that helps!

Stats  PsyDAG, Wednesday, March 31, 2010 at 1:44pm
If you don't have a graphing calculator, you can find table in the back of your statistics text labeled something like "areas under normal distribution" to find the probability.
I hope that helps a little more.
Answer This Question
Related Questions
 Statstics  A loaf of bread is normally distributed with a mean of 22 ounces and...
 statistics  A loaf of bread is normally distributed with a mean of 22 ounces ...
 buss/stats  Sorry the full question is A loaf of bread is normally distributed ...
 maths  A loaf of bread is normally distributed with a mean of 22 oz and a ...
 Math  Leena bakes a loaf of bread. She eats 1/8 loaf of bread and give 1/6 of ...
 Math  Leena bakes a loaf of bread. She eats 1/8 of the loaf and gives 1/6 of it...
 Math  A loaf of bread was shared by four people. The amounts they each received...
 math  At Frugal Foods a loaf of bread cost about $1 in 1980. In 2013, the loaf ...
 Math  It takes Kelly 3/4 hour to bake a small loaf of bread.how many loaves of ...
 math  At Frugal Foods a loaf of bread cost about $1 in 1980. In 2013, the loaf ...
More Related Questions