The sample space S is depicted by the Venn Diagram below. P(A) = 0.35, P(B) = 0.67,P(C) = 0.13 P(An B) = 0.05, P (A n C) = 0.13, P (B n C) = 0.07 Given that P(A UBUC) = 1, calculate the following probabilities: (a) P (AUB) (b) P(BIC) (c) P(An BNC) A с B
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- An oil company purchased an option on land in Alaska. Preliminary geologic studies assigned the following prior probabilities. After 200 feet of drilling on the first well, a soil test is taken. The probabilities of finding the particular type of soil identified by the test are given below. Given the soil found in the test, use Bayes' theorem to compute the following revised probabilities (to 4 decimals). What is the new probability of finding oil (to 4 decimals)?At a local bar in North Park, 57% of bargoers order their specialized homemade beer. They advertise their homemade beer and want to know if the proportion has increased. From 140 randomly selected customers, 67% of the 140 ordered the specialized homemade beer. Our test is given as, Ho: p = 0.57 Ha: p > 0.57 with a p-value of 0.0084. The manager at the bar concludes the probability that the population proportion is greater than 0.57 is 0.0084. Is he correct or incorrect in his interpretation? Explain your reasoning.According to New Jersey Transit, the 8:00 a.m. weekday train from Princeton to New York City has a 90% chance of arriving on time on a randomly selected day. Suppose this claim is true. Choose 6 days at random. Let Y = the number of days on which the train arrives on time. What is P(Y = 4)? Interpret this value. (0.90)4 (0.10)². There is a 0.66% probability that exactly 4 of the 6 trains arrive on time. (0.90) ¹ (0.10)². There is a 0.66% probability that at least 4 of the 6 trains arrive on time. This probability cannot be calculated because this is not a binomial setting. O()(0.90)+ (0.10)². There is a 9.84% probability that at least 4 of the 6 trains arrive on time. O()(0.90)4 (0.10)². There is a 9.84% probability that exactly 4 of the 6 trains arrive on time.
- Let the variable Z stand for a standard normally-distributed variable. Find these probabilities a. p (z < 1.76 ) b. p ( -2.05 < z < .66 ) C. p ( z > -1.62 ) Then, find these z values that satisfy the following conditions a. 87.29% of the area under the distribution curve is to the left of it b. 67.72% of the area under the distribiution curve lies to the right of itTable 3.1 describes the distribution of a random sample S of 100 individuals, organized by gender and whether they are right- or left-handed. Right-handed Left-handed Table 3.1 Left-hand Right- Hand MALE 43 9 FEMALE 44 4 Let's denote the events M = the subject is male, F = the subject is female, R = the subject is right-handed, L= the subject is left-handed. Compute the following probabilities: a. P(M) b. P(F) c. P(R) d. P(L) e. P(M AND R) f. P(F AND L) g. P(M OR F) h. P(M OR R) 1. P(F OR L) J. P(M) k. P(R|M) I. P(F|L) m. P(L|F)Consider the random variable y = the number of broken eggs in a randomly selected carton of one dozen eggs. Suppose the probability distribution of y is as follows. y 0 1 2 3 4 p(y) 0.63 0.18 0.12 0.05 ? (a)Only y values of 0, 1, 2, 3, and 4 have probabilities greater than 0. What is p(4)? (Hint: Consider the properties of a discrete probability distribution.) (e) What is the probability that the carton contains exactly 10 unbroken eggs? (Hint: What is the corresponding value of y?) (f) What is the probability that at least 10 eggs are unbroken?
- How were the answers of 0.5000, 0.3810, 0.1586, and 0.1586 attained?In the U.S., about 85% of people are Rh positive for blood type. You take a sample of size 7. Use R to calculate the following probabilities: a) Pr{Y = 2} b) Pr{Y = 5}In a certain school, the probabilities of the number of students who are reported tardy are shown in the following table: Number tardy: 2 3 4 Probability: 0.17 0.25 0.31 0.21 0.06 What is the expected number of tardies (rounded to two decimal places)?
- The accompanying tree diagram represents a two-stage experiment. (Let x = 0.3, y = 0.7, r = 0.7, s = 0.3, t = 0.4, and w = 0.6.) Use the diagram to find the following probabilities. (Round your answers to three decimal places.) (a) Find P(A) · P(D | A).(b) Find P(B) · P(D | B).(c) Find P(A | D).The accompanying tree diagram represents an experiment consisting of two trials. Use the diagram to find the probabilities below. (a) P(A)(b) P(E | A)(c) P(A E)(d) P(E)If x is a binomial random variable, use the binomial probability table to find the probabilities below. a. P(x < 7) for n = 15, p = 0.8 b. P(x ≥ 13) for n = 20, p = 0.3 c. P(x = 2) for n = 25, p = 0.5