This and 1380. Find the z-scores that correspond to each value and determine whe

Question

This and 1380. Find the z-scores that correspond to each value and determine whether any of the values are unusual The z score for 1930 is (Round to two decimal places as needed ) The z score for 1260 is The 2-score for 2170 is Round to two decimal places as needed ) The z-score for 1380 is (Round to two decimal places as needed) Which values, if any are unusual? Select the correct choice below and, if necessary, fill in the answer box within your choice O A. The unusual value(s) is/are (Use a comma to separate O B. None of the values are unusul

Explanation / Answer

M=1497

S=311

1)

Zscore of x=1930

Z=X-M/S

=1930-1497/311

=1.39

2) Z score of x=1260

Z=1260-1497/311

Z= -0.76

3)

Z score of x=2170

Z=2170-1497/311

Z=2.16

4)

Z score of x=1380

Z=1380-1497/311

Z=-0.38

The unusual values are 1930 & 2170

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