Blood pressure: High blood pressure has been identified as a risk factor for heart attacks and strokes. The proportion of U.S. adults with high blood pressure is 0.20. A sample of 38 U.S. adults is chosen. Use Excel as needed. (a) Is it appropriate to use the normal approximation to find the probability that more than 43% of the people in the sample have high blood pressure? If so, find the probability. If not, explain why not.

Sarah throws a fair die multiple times, recording the total number of "2"s she throws and then calculating the proportion of "2"s she has thrown so far after each throw. She then constructs a graph to visualize her results. Which of the following statements is FALSE? a. This is an example of the law of large numbers. b. The theoretical probability of getting a 2 is 0.167 for each throw. c. The relative frequency of "2"s thrown changes as Sarah throws the die more. d. The probability distribution for the possible number of outcomes changes as the total number of throws increases.

TRY IT 3.23 Table 3.10 relates the weights and heights of a group of individuals participating in an observational study. Weight/Height Tall Medium Short Totals Obese 18 28 14 Normal 20 51 28 Underweight 12 25 9. Totals Table 3.10 a. Find the total for each row and column b. Find the probability that a randomly chosen individual from this group is TallI. c. Find the probability that a randomly chosen individual from this group is Obese and Tall. d. Find the probability that a randomly chosen individual from this group is Tall given that the idividual is Obese. e. Find the probability that a randomly chosen individual from this group is Obese given that the individual is Tall. f. Find the probability a randomly chosen individual from this group is Tall and Underweight. g. Are the events Obese and Tall independent?

Submit your answer as an exact fraction or a decimal rounded to the hundredths place. Cupcakes are being randomly passed out to every student in the class. The assortment of cupcakes is described in the table below. What is the probability of receiving a cupcake that is not red velvet flavored? Cupcake flavor Number of cupcakes Lemon 8 Vanilla 2 Red velvet 6 Birthday cake 4 Mint chocolate 2

D. 286/973; 0.294

In a certain study, the chance of encountering a car crash on the road is stated as 20%. Express that as a probability (which means it should be written as a decimal or a reduced fraction.)

For the probability distribution, find b. P(y> 2) c. F(y = 6) d. P(y = 6) 0.05, 0.10, f(y)= 0.15, 0.20, X, y = -2 y = -1 y = 0 y = 1 y = 2

T15 Suppose that 90% of drivers are "careful" and 10% are "reckless." Suppose further that a careful driver has a 0.2 probability of being in an accident in a given year, while for a reckless driver the probability is 0.4. What is the probability that a randomly selected driver will have an accident within a year? (Enter your answer to two decimal places.)

An insurance company issues a policy for a diamond ring worth $15,000 for an annual premium of $225.00. If the company figures the probability of the ring to be lost or damaged is 0.005, what is the company's expected profit?  Round your answer to nearest cent.  (e.g.  $135.789 would enter as 135.79)