Question

suppose the life spans of male moquitos are normally distributes with a mean of 15 days and standard deviation of 2.5 days
what is the percent live between 7.5 and 22.5 days


answer____________%

Answer 1

@happy_to_help

Answer 2

@jfernandes

Answer 3

@DarrenMadx

Answer 4

@Answers101

Answer 5

well 7.5 is 3 standard deviations below the mean and 22.5 is 3 standard deviations above the mean...

so knowing a little about the standard normal curve, there is 1 attached

you can either add the percentages between -3 and + 3

or use 100% - percentages outside of 3 standard deviations...

hope it helps