Question 1

Scores on a history test have average of 80 with standard deviation of 6. What is the z-score for a student who earned a 75 on the test?

Accepted Answer

-0.83

Answer

0.80

Answer

-0.80

Answer

0.83

Question 2

The weight of chocolate bars from a particular chocolate factory has a mean of 8 ounces with standarddeviation of .1 ounce. What is the z-scorecorresponding to a weight of 8.17 ounces?

Accepted Answer

1.7

Answer

-1.7

Answer

-0.17

Answer

0.17

Question 3

Books in Marikina library arefound to have average length of 350 pages with standard deviation of 100 pages.What is the z-score corresponding to a book of length 80 pages?

Accepted Answer

-2.7

Answer

2.7

Answer

0.27

Answer

-0.27

Question 4

The temperature is recorded at 60 airports in a region. The average temperature is 67 degrees Fahrenheitwith standard deviation of 5 degrees. What is the z-score for a temperature of 68 degrees?

Accepted Answer

0.2

Answer

-1.6

Answer

1.6

Answer

-0.2

Question 5

A group of friends compares what they received while trick or treating. They find that the average numberof pieces of candy received is 43, with standard deviation of 2. What isthe z-score corresponding to 20 pieces of candy?

Accepted Answer

-11.5

Answer

11.5

Answer

-1.15

Answer

1.15

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