Answer: 0.1587
Step-by-step explanation:
Given : Adult male heights have a normal probability distribution with a mean of 70 inches and a standard deviation of 4 inches.
i.e.
Let x be the random variable that represents the heights of adult males.
Also,
For x= 74 , we have
Then, the probability that a randomly selected male is more than 74 inches tall:-
[using z-value table.]
Hence, the probability that a randomly selected male is more than 74 inches tall = 0.1587
Answer:
4
i got it correct
let x = the price of a book
so you would have
total = 3x-20
Uhhhh what?
I am confused...