Question

In a large population, very close to 25% of the observations will fall below the 25th percentile (Q1), and close to 75% fall below the 75th percentile (Q3). The website of the Educational Testing Service reports that on the SAT Mathematics test, with a possible perfect score of 800, the 96th percentile of 1,475,623 scores nationwide is a score of 720.

What is the best estimate of exactly how many scores were below 720?

Answer 1

@satellite73

Answer 2

what?

Answer 3

@joemath314159

Answer 4

@eliassaab

Answer 5

@oldrin.bataku

Answer 6

i couldnt reply to your msg, but thank youu!!

Answer 7

A. 192,000

Answer 8

B. 1,417,000

Answer 9

C. 557

Answer 10

D. 80%

Answer 11

E. 84

Answer 12

does that help?

Answer 13

In a large population, very close to 25% of the observations will fall below the 25th percentile (Q1), and close to 75% fall below the 75th percentile (Q3). The website of the Educational Testing Service reports that on the SAT Mathematics test, with a possible perfect score of 800, the 96th percentile of 1,475,623 scores nationwide is a score of 720.

What is the best estimate of exactly how many scores were below 720?

If the 96th percentile is 720 then we have about 96% of scores below that number, hence \(\frac{96}{100}\times1475623\approx1416598\)

Answer 14

@oldrin.bataku soooo B if i round it?

Answer 15

that sounds about right

Answer 16

thank youuuu! @oldrin.bataku and @modphysnoob

i have another one...

Answer 17

This question refers to Barry Bonds' home run-totals for the years 1991-2005:

25, 34, 46, 37, 33, 42, 40, 37, 34, 49, 73, 46, 45, 45, 5

The third quartile of this distribution, 46, is also called the 75th percentile, indicating that approximately 75% of the observations fall below this value. In this distribution, what percent of the observations actually fall above 46? Do not enter the percent sign in your answer. If necessary, round your answer to the nearest whole number.

Answer 18

make another thread

Answer 19

this thing wont let me ask any questions :( and i have to finish this by tomoroww. ahhh what should i ddooo?