Question

Adult male heights are normally distributed with a mean of 70 inches and a standard deviation of 3 inches. The average basketball player is 79 inches tall. Approximately what percent of the adult male population is taller than the average basketball player?

a.) 0.13%
b.) 0.87%
c.) 49.87%
d.) 99.87%

I think ts D but im not quite sure what I have don to get that answer haha please help me step by step :)

Answer 1

I haven't taken stat is forever. I think you take the z-score first, but don't quote me on that

Answer 2

@myininaya

Answer 3

can you help me?

Answer 4

and thanks
@larryboxaplenty

Answer 5

Do you know how to take z-score?

Answer 6

there is a formula for it right?

Answer 7

I can't verify since I don't have a book with all the areas on them

Answer 8

\[z = \frac{ x-\mu }{ \sigma } \]

Answer 9

but what would the variables stand for? i plug in the values right?

Answer 10

what they give me in the problem?

Answer 11

@larryboxaplenty

Answer 12

@LeilaJudeh

Answer 13

z-score = score - mean all over standard deviation.

Answer 14

In this case, your score is 70 (inches), which is what you're using as a marker

Answer 15

Okay so what you have to do is fiind the difference between the two heights, which is 6. Now that you know that between the average male and a basketball player is about 6 inches you have to find the percent

Answer 16

how do i find the percentage? *.*

Answer 17

Im not 100% sure because I have a million things going on right now and cant exactly focus on your question, but I would say A. TO me D is far off.

Answer 18

I don't think it works like that, this is a statistics question

Answer 19

oh...im confused >.<

Answer 20

The question says Approximate what percentage of male adults are taller then Basketball players. Not with the stats saying that the basket ball players are averaged height to be 79 inches what would make it a 99.87% chance that the average male would be taller?

Now thats just looking at the stats.

Answer 21

You can find the percentages by finding the area under the curve. You have to use what's given, and you don't really do that with standard deviation.

Answer 22

how do i look at the stats?

Answer 23

Lets just look at it from a logical point of view for right now. If the stats show that the average basket ball player is 79 inches, and the average male is 70-73 and the question asks what percentage of males would be taller then basketball players why would it be 99%? It just doesnt make sense

Answer 24

hailhydra, are you taking statistics, or am I going crazy here?

Answer 25

Leil, I'm trying to use a certain study of math to solve this. If there is a shortcut, then that's fine, but I was trying to be as accurate as possible.

Answer 26

this is normal distribution

Answer 27

@larryboxaplenty