Question

Page 2 > of 8 8. A group of volunteers for a clinical trial consists of 81 women and 98 men. 31 of the women and 27 of the men have high blood pressure. If one of the volunteers is selected at random, find the probability that the person has high blood pressure given the person is a man. A) 27/98 B) 31/81 C) 31/58 D) 27/98 E) None of the Above 9. At a large university, students have an average credit card debt of $2200 with a standard deviation of $600. 99.7% of all credit card debts are between what two numbers? Use the Empirical Rule. A) 1000, 3400 B) 1600, 2800 C) 31.6, 58.3 D) 400, 4000 E) None of the Above 10. Find the percent of the Standard Normal model found in the given region: 1.9<z<2.11 A) 0.1618 B) 0.0065 C) 0.1667 D) 0.0113 E) None of the Above 11. A town's average snowfall is 30 inches per year with a standard deviation of 8 inches. How many standard deviations from the mean is a snowfall of 47 inches? A) 1.875 B) 2.125 C) 1.375 D) 1.75 E) None of the Above 12. Is the mean lifetime of a particular car engine at least 300,000 miles? To test this claim, a sample of 27 engines is measured, yielding an average of 295,450 miles and a standard deviation of 4200 miles. Use a significance level of 0.01 to test this hypothesis. A) IEETS B) NEETS C) IEETR D) NEETR E) None of the Above MacBook Pro go DOO

Answer 1

Total = 98 high blood pressure = 27, Total = 81 Have high tobood Pressure = 31, person, have 27 high men pressure Women 8. Solution: Men Have 31, Women! Have Now, we will choose blood pressure Probability of P(A)= 39 blood Probability of have high PCB)=34 The probability that has person high blood pressure the gliven person PLA) PCA) + P(C) 27 31 + the man is 2187 5225 31 81 the of Above Answer! E) None