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

question 17

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.

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