Question: Let x denote the systolic blood pressure of an individual
Let x denote the systolic blood pressure of an individual selected at random from a certain population. Suppose that the normal distribution with mean m 5 120 mm Hg and standard deviation σ = 10 mm Hg is a reasonable model for describing the population distribution of x. (The article “Oral Contraceptives, Pregnancy, and Blood Pressure,” Journal of the American Medical Association : 1507–1510, reported on the results of a large study in which a sample histogram of blood pressures among women of similar ages was found to be well approximated by a normal curve.)
x is more than 2.5 standard deviations from its mean value.
Answer to relevant QuestionsA pizza shop sells pizzas in four different sizes. The 1000 most recent orders for a single pizza gave the following proportions for the various sizes: With x denoting the size of a pizza in a single-pizza order, the given ...Explain the difference between σ and σx and between m and µ x. A manufacturing process is designed to produce bolts with a 0.5-inch diameter. Once each day, a random sample of 36 bolts is selected and the bolt diameters are recorded. If the resulting sample mean is less than 0.49 inches ...The article referenced in Exercise 8.25 reported that for unmarried couples living together, the proportion that are racially or ethnically mixed is .15. Answer the questions posed in Parts (a)– (e) of Exercise 8.25 for ...Suppose that 20% of the subscribers of a cable television company watch the shopping channel at least once a week. The cable company is trying to decide whether to replace this channel with a new local station. A survey of ...
Post your question