2. The average human lifespan is 79 years with a standard deviation of 15 years.
a) Draw the normal density curve for this distribution.
K-12 SSO
5, 2nd
312
b)
What is the probability that someone will live between 49 and 64 years?
c)
What percent of humans will live longer than 109 years?
d)
Sixty-eight percent of humans have a lifespan between what ages?

Will mark brainliest for correct answer! i have been on this problem for an hour and can't find the answer. i'm begging here! incase you cant read the instructions in the picture because of too much or too little lighting: note: enter your answer and show all the steps that you use to solve this problem in the space provided.write a list of steps that are needed to find the measure of b. provide all steps as clear as possible, !