Hugo averages 76 words per minute on a typing test with a standard deviation of 12.5 words per minute. Suppose Hugo's words per minute on a typing test are normally distributed. Let X= the number of words per minute on a typing test. Then, X∼N(76,12.5).Suppose Hugo types 66 words per minute in a typing test on Wednesday. The z-score when x=66 is ________. This z-score tells you that x=66 is ________ standard deviations to the ________ (right/left) of the mean, ________.Correctly fill in the blanks in the statement above. Select the correct answer below: A. Suppose Hugo types 66 words per minute in a typing test on Wednesday. The z-score when x=66 is 0.645. This z-score tells you that x=66 is 0.645 standard deviations to the right of the mean, 76. B. Suppose Hugo types 66 words per minute in a typing test on Wednesday. The z-score when x=66 is −0.8. This z-score tells you that x=66 is 0.8 standard deviations to the left of the mean, 76. C. Suppose Hugo types 66 words per minute in a typing test on Wednesday. The z-score when x=66 is −0.645. This z-score tells you that x=66 is 0.645 standard deviations to the left of the mean, 76. D. Suppose Hugo types 66 words per minute in a typing test on Wednesday. The z-score when x=66 is 0.8. This z-score tells you that x=66 is 0.8 standard deviations to the right of the mean, 76.
Hugo averages 76 words per minute on a typing test with a standard deviation of 12.5 words per minute. Suppose Hugo's words per minute on a typing test are
Suppose Hugo types 66 words per minute in a typing test on Wednesday. The z-score when x=66 is ________. This z-score tells you that x=66 is ________ standard deviations to the ________ (right/left) of the
Correctly fill in the blanks in the statement above.
Select the correct answer below:
A. Suppose Hugo types 66 words per minute in a typing test on Wednesday. The z-score when x=66 is 0.645. This z-score tells you that x=66 is 0.645 standard deviations to the right of the mean, 76.
B. Suppose Hugo types 66 words per minute in a typing test on Wednesday. The z-score when x=66 is −0.8. This z-score tells you that x=66 is 0.8 standard deviations to the left of the mean, 76.
C. Suppose Hugo types 66 words per minute in a typing test on Wednesday. The z-score when x=66 is −0.645. This z-score tells you that x=66 is 0.645 standard deviations to the left of the mean, 76.
D. Suppose Hugo types 66 words per minute in a typing test on Wednesday. The z-score when x=66 is 0.8. This z-score tells you that x=66 is 0.8 standard deviations to the right of the mean, 76.
Trending now
This is a popular solution!
Step by step
Solved in 3 steps
