Question

Could someone please explain this? :)

I dont understand why my selection for B was incorrect. (Image below, and its a bit faded) Sorry.

Answer 1

Even though it explains: Probability deals with experiments that yield random​ short-term results or outcomes yet reveal​ long-term predictability. The long term proportion in which a certain outcome is observed is the probability of that outcome.

Why is it that saying 'about' is incorrect, isn't it a probability, so it's not exact?

Answer 2

A survey of 500 randomly selected high school students determined that 200
play organized sports.

​(a) What is the probability that a randomly selected high school student plays organized​ sports?
​(b) Interpret this probability.
​(a) The probability that a randomly selected high school student plays organized sports is 0.4

A. If​ 1,000 high school students were​ sampled, it would be expected that exactly (0.2)
of them play organized sports.

> B. If​ 1,000 high school students were​ sampled, it would be expected that about 0.2
of them play organized sports

Answer 3

So B was incorrect... But I still dont get the reasoning why

Answer 4

wait was I supposed to do 1,000(0.4) the old probability?

Answer 5

0.2 is still the percentage so wouldn't it be correct?

Answer 6

Woopsies, i get it, I didn't do the percentage (.4) (1,000) = 400 to get it, the reasoning of about was correct I think.

Answer 7

so from 500 play 200

yes ?

500 mean 100%
200 mean x %
----------------
x = 200*100/500 = ?%

Answer 8

It equals to 40? :D

Answer 9

yes 40% of 500 students play organized sports

Answer 10

Oh I see thank you very much! So then after that if a 1,000 students were chosen then I just do, 1,000 (0.4)?

Answer 11

or 1,000/200

Answer 12

from 500 play 200
so from1000 play 400

than 1000 mean 100%
so 400 mean x%
----------------------
x = 400*100/1000 = ?

Answer 13

it would be 40?

Answer 14

Oh I get it, thank you!

Answer 15

np

welcome and anytime

good luck

bye bye