Question

Suppose that people’s weights are normally distributed, with mean 175 pounds and a standard deviation of 6 pounds. Round to the nearest hundredth of a percent
a. What percent of the population would weigh between 165 and 170 pounds?
b. What percent of the population would you expect to weigh more than 182 pounds?
c. What percent of the population would you expect to weigh between 172 and 180 pounds?

d. What percent of the population would you expect to be heavier than 163 pounds?
the worksheet is titles the normal curve, im not sure how to figure the percent out

Answer 1

your magic webpage for this stuff

http://davidmlane.com/hyperstat/z_table.html

Answer 2

i used this page for these answers and they came up all wrong, i don't understand how to use the information given to calculate the percent