The average ACT score follows a Normal distribution, with a mean of μ = 21.1 and a standard deviation of σ = 5.1. What is the probability that the mean IQ score of 50 randomly selected people will be more than 23?

k

step-by-step explanation:

domit

step-by-step explanation:

this can be solved first with pythagorean theorem, which tells us to square both legs of the triangle and sum it. this will be equal to the square of the hypotenuse.

the hypotenuse is the side "opposite" the 90 degree angle, which is x.

so we can write using pythagorean theorem,

simplifying:

to further simplify this radical, we need to use the property  

thus

the correct answers are 1, 2, 4, and 5! i just got it right!