Systolic blood pressure for a group of women is normally distributed, with a mean of 120 and a standard deviation of 15. Find the probability that a woman selected at random has blood pressure greater than 142.5. Round your answer to four decimal places.
A)0.9332
B)0.5668
C)0.0668
D)0.4332
E)0.8664

Question

Systolic blood pressure for a group of women is normally distributed, with a mean of 120 and a standard deviation of 15. Find the probability that a woman selected at random has blood pressure greater than 142.5. Round your answer to four decimal places. ​
A)0.9332
B)0.5668
C)0.0668
D)0.4332
E)0.8664

Quizplus · Accepted Answer

We can use the z-score formula to standardize the value: z = (142.5 - 120) / 15 = 1.5. Then, we can use a standard normal distribution table or calculator to find the probability of a z-score greater than 1.5. This probability is 0.0668.

Systolic Blood Pressure for a Group of Women Is Normally