Question 93 pts

Determine the coefficient of skewness for the following set of data.

mean = 40 median = 30 standard deviation = 4

Group of answer choices

2.5

1.5

0

1

Flag question: Question 10Question 101 pts

If the " tail " of a frequency distribution is in positive direction ( to the right) the coefficient of skewness is

Group of answer choices

zero

negative

none of these

positive

Flag question: Question 11Question 115 pts

If we use the standard normal distribution the probability of obtaining a Z- value between 1 and 2 is

Group of answer choices

47.72%

31.43%

13.59%

2.28%