SOLUTION: Good Afternoon everyone I need help with the following questions, thank you in advance :) 2)Some research revealed that males who are 6 feet tall and between the ages of 18 and

Algebra ->  Probability-and-statistics -> SOLUTION: Good Afternoon everyone I need help with the following questions, thank you in advance :) 2)Some research revealed that males who are 6 feet tall and between the ages of 18 and       Log On


   

Question 870772: Good Afternoon everyone I need help with the following questions, thank you in advance :)
2)Some research revealed that males who are 6 feet tall and between the ages of 18 and 24 have their weight normally distributed with a mean of 175 lbs and a standard deviation of 14 lbs. Find the percentage of such males who:
a) Weigh between 190 and 210 lbs
b) Weigh less than 150 lbs
c) weigh more than 180 lbs
d) have weight within one standard deviation of the mean

Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
mean of 175 lbs and a standard deviation of 14 lbs.
P(190 < x < 210) = P(z < 35/14) -P(z < 15/35)
P(x < 150) = P(z < -25/35) = P(z < -.7143) = 23.75% Using table / Calculator
P(x > 180) = 1 - P(z< 5/35)