Question

According to the distribution, if 1,000 students who took the test are randomly selected, how many scored a 2 or higher?

A. 88
B. 120
C. 340
D. 880

Answer 1

@Astrophysics

Answer 2

Notice that these circled numbers below represent the height of bars, which represents the probability of achieving a particular test score.

Answer 3

Looking at that diagram, can you tell the probability of achieving a test score of 2 ?

Answer 4

34%?

Answer 5

Yes! whats the probability of achieving a test score of 3 ?

Answer 6

31%

Answer 7

good, so whats the probability of achieving a test score of 2 or higher ?

Answer 8

88% ?

Answer 9

Excellent! lets get back to the main problem

Answer 10

you have 1000 students
and you know that 88% of them are most likely to score 2 or higher

Answer 11

so you simply need to find 88% of 1000 to get the number of students that score 2 or higher

Answer 12

whats 88% of 1000 ?

Answer 13

do i divide them?

Answer 14

88% means 88 in every 100

Answer 15

so how many in 1000 ?

Answer 16

make a good guess, im sure u wil be right

Answer 17

i got 0.088?

Answer 18

0.088 students? haha are you planning to cut the students ?

maybe forget the formulas.

out of 100 students, if 88 students are good,
then how many students will be good out of 1000 students ?

Answer 19

100 ---> 88
1000 --> ?

Answer 20

is it 880 by any chance?

Answer 21

Yes, aren't you sure ?

Answer 22

I added 88, 10 times... 😅

Answer 23

interesting, why ?

Answer 24

I could've multiplied it, but I didn't think of it, and bc if 100 = 88 and 100, 10 times is 1000 so I added 88 10 times..

Answer 25

Awesome! thats good thinking!

Answer 26

btw, 880 is correct

Answer 27

880 is 88% of 1000