Question

(3.08) In 2010, when she was a high school senior, Alysha scored 670 on the Mathematics part of the SAT.4 The distribution of SAT Math scores in 2010 was Normal with mean 516 and standard deviation 116. John took the ACT and scored 26 on the Mathematics portion. ACT Math scores for 2010 were Normally distributed with mean 21.0 and standard deviation 5.3.

670 - 516 / 116 = .011445 ?

Answer 1

what is the question? there is alot of stated information, but nothing asked about it that i can see

Answer 2

What is Alysha's standardized score? Round your answer to 2 decimal places.

Answer 3

Alysha scored 670
mean 516
std dev 116

to standardize this, we would zero out the mean (and all related data points)
and divide out the std dev,

in effect:

(670 - 516)/116

so yes

Answer 4

I'm getting 1.3 now.

670 - 516 / 116 = 1.3

Answer 5

1.3275.... rnd as needed

Answer 6

What is John's standardized score? Round your answer to 2 decimal places.
26 - 21 / 5.3 = .94

Assuming that both tests measure the same kind of ability, who has the higher score?

Answer 7

your format is fine

when both standardized scores are compared; which one is bigger?

Answer 8

Alysha's

Answer 9

then she has the higher score :)

Answer 10

what is the rounded number for this 1.3275...? I put 1.3 and got it wrong.

Answer 11

rnd to 2 decies ..., that n.xx format

Answer 12

1.33?

Answer 13

correct

Answer 14

Ah okay.

Answer 15

Thanks!

Answer 16

youre welcome