SOLUTION: Using the 68-95-99.7 rule: Assume that a set of test scores is normally distributed with a mean of 100 and a standard deviation of 20. Use the 68-95-99.7 rule to find the followin

Question 312460: Using the 68-95-99.7 rule:
Assume that a set of test scores is normally distributed with a mean of 100 and a standard deviation of 20. Use the 68-95-99.7 rule to find the following quantities:
Suggest you make a drawing and label first�
a.Percentage of scores less than 100
b.Relative frequency of scores less than 120
c.Percentage of scores less than 140
d.Percentage of scores less than 80
e.Relative frequency of scores less than 60
f.Percentage of scores greater than 120
Answer by mzyoungnsexi(1) (Show Source): You can put this solution on YOUR website!
jkn
RELATED QUESTIONS
Assume that a set of test scores is normally distributed with a mean of 80 and a standard (answered by ikleyn)

Assume that a set of test scores is normally distributed with a mean of 100 and a... (answered by Boreal)

Assume that a set of test scores is normally distributed with a mean of 80 and a standard (answered by stanbon)

Assume that a set of test scores is normally distributed with a mean of 80 and a standard (answered by Fombitz)

Using the 68-95-99.7 rule: Assume that a set of test scores is normally distributed with (answered by stanbon)

Assume that a set of test scores is normally distributed with a mean of 100 and a... (answered by greenestamps)

Assume that a set of test scores is normally distributed with a mean of 80 and a... (answered by stanbon)

Assume that a set of test scores is normally distributed with a mean of 120 and a... (answered by Boreal)

Assume that a set of test scores is normally distributed with a mean of 80 80 and a... (answered by Theo)