Question

please help! :< I will give you a shiny medal :)

Answer 1

The number I put in are incorrect :(

On the calculator I got:

x = 38.9125
standard deviation = 3.5

Answer 2

the z score is x - (mean) = 31.5 - 38.9 = 2.6/standard deviation (3.5) = 0.74

Answer 3

@agent0smith I hope I'm not bothering you :> But it would be nice to have your expertise :3

Answer 4

The​ z-score corresponding to the individual is 0.75 (I changed it to 0.75 since 0.75 is the z score I got) and indicates that the data value is [???] standard​ deviation(s)
above the mean.

I still dont understand the section where it asks how it indicates the data value is something standard deviations above the mean. Is it the empirical rule? I'm so confused because how can i explain it when it's not exactly at one of the 4 quadrants?

Answer 5

The z score IS how many standard deviations.

Answer 6

The z score is how many standard deviations the data value is above the mean?

Answer 7

wait so 0.75 was just a wrong computation that I did for the z score then?

Answer 8

because I took the sample standard deviation not the population standard deviation.

Answer 9

The​ z-score corresponding to the individual is 0.75 and indicates that the data value is 0.75 standard​ deviation(s) above the mean.

Answer 10

When I placed it, the program said 0.75 was incorrect :(

Answer 11

Wait I re did the math: 41.5 - 38.9 = 2.6 / 3.59 = 0.724

Answer 12

But is the individual 41.5 because that's the variable x we are trying to find the z score for?

Answer 13

"The​ ***z-score*** corresponding to the individual is 0.75"

Answer 14

wait.. so it's the same thing repeated? :o

Answer 15

Yes, because "The z score IS how many standard deviations from the mean."

Answer 16

oh oops... I'm sorry for taking your time. Thank you so much, your a life saver!

Answer 17

No problem, you're welcome.