Use the Following Information to Answer Questions (8) - (10)

Multiple Choice

Use the following information to answer questions (8) - (10) . Suppose that the mean Systolic blood pressure for
adults age 50-54 is 125 mmHg with a standard deviation of 5 mmHg. It is known that Systolic blood pressure is not
Normally distributed. Suppose a sample of 25 adult Systolic blood pressure measurements is taken from the
population.
-What is the approximate probability with interpretation that the average diastolic blood pressure will be less than 122 mmHg, given the above information? Round to the nearest thousandth.

A) The probability for z = 3.00 or less is less than or equal to 3 standard deviations which is not a significant result.
B) The probability for z = -3.00 or less is less than or equal to 3 standard deviations which is a significant result, using an approximation of 0.5 of (1 - 99.7%) = 0.0015.
C) The probability for z = -3.00 or less is less than or equal to 3 standard deviations which is a significant result, using an approximation of 2*(1 - 99.7%) = 0.0060.
D) None of the above statements are correct.