Assume that the mean systolic blood pressure of normal adults is 120 milliliters

Question

Assume that the mean systolic blood pressure of normal adults is 120 milliliters of mercury (mm Hg) and the standard deviation is 5.6. Assume the variable is normally distributed.
a.) If an individual is selected, find the probability that the individual’s pressure will be between 120 and 12.8 mm Hg.
b.)If a sample of 30 adults is randomly selected, find the probability that the sample mean will be between 120 and 121.8 mm Hg.
c.) Why is the answer to part a so much smaller than the answer to part b?

Explanation / Answer

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.