Hugo averages40

words per minute on a typing test with a standard deviation of15

words per minute. Suppose Hugo's words per minute on a typing test are normally distributed. LetX=

the number of words per minute on a typing test. Then,XN(40,15)

.

Suppose Hugo types56

words per minute in a typing test on Wednesday. Thez

-score whenx=56

is ________. Thisz

-score tells you thatx=56

is ________ standard deviations to the ________ (right/left) of the mean, ________.

Correctly fill in the blanks in the statement above.

Select the correct answer below:

Suppose Hugo types56

words per minute in a typing test on Wednesday. Thez

-score whenx=56

is0.889

. Thisz

-score tells you thatx=56

is0.889

standard deviations to theleftof the mean,40

.

Suppose Hugo types56

words per minute in a typing test on Wednesday. Thez

-score whenx=56

is1.067

. Thisz

-score tells you thatx=56

is1.067

standard deviations to theleftof the mean,40

.

Suppose Hugo types56

words per minute in a typing test on Wednesday. Thez

-score whenx=56

is1.067

. Thisz

-score tells you thatx=56

is1.067

standard deviations to therightof the mean,40

.

Suppose Hugo types56

words per minute in a typing test on Wednesday. Thez

-score whenx=56

is0.889

. Thisz

-score tells you thatx=56

is0.889

standard deviations to therightof the mean,40

.