Z = (score-mean)/SD
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability of the Z score. Multiply by 100 to get the percentage.
Suppose that diastolic blood pressure readings of adult males have a bell-shaped distribution with a mean of 84
84
mmHg and a standard deviation of 9
9
mmHg. Using the empirical rule, what percentage of adult males have diastolic blood pressure readings that are greater than 102
102
mmHg? Please do not round your answer.
2 answers
Suppose that diastolic blood pressure readings of adult males have a Bell-shaped distribution with a mean of 80 mmHg and a standard deviation of 10 mmHg. Using the empirical rule,what percentage of adult males have diastolic blood pressure readings that are less than 70 mmHg?
1 answer