Question

Consider a normally distributed data set with a mean of 154 and a standard deviation of 9.8. If one of the observed values is 176, what is the z score?
+3.36,
-2.24,
+2.24,
-22.00, or
+22.00

Answer 1

@Nnesha @kelliegirl33 @Southern_Bell

Answer 2

@Hero @satellite73

Answer 3

@rational

Answer 4

@flight98

Answer 5

@Butterfield1215

Answer 6

what does a z score tell us?

Answer 7

i am not sure @amistre64

Answer 8

will you tell me how to do this?@amistre64

Answer 9

@amistre64

Answer 10

i saw someone gave a formula for it, but forgeting the formula is an easy thing to do.

a z score measures the number of standard deviations it takes to get from the mean to our observed value

we find the distance between the mean and observed value, and in most cases direction is important. soo

observed - mean = dist, defines the distance between them

z(sd) = dist, defines the number of times the standard deviation fits within the distance

z = dist/(sd) which is our formula

Answer 11

176
- 154
------
22

so the question is askin

how many times does 9.8 fit within 22?

9.8 z = 22, what is z?