Suppose that P(B|A) = 0.3, P(B|A') = 0.3, and P(A) = 0.7. Determine P(A/B)
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- find p (more than 3)Mrs. Krabappel writes a multiple-choice test with twenty questions, each of which has five choices (ABCDE). If Jimmy guesses randomly at all twenty questions, how many questions should Jimmy get right?What is the answer to the letter c? If it is geomcdf, what are the lowerbound and upperbound if you solve it using a calculator?
- In a multiple-choice test, there are three possible answers to each question. There are 10 questions in the exam. One point is given for the correct answer but nothing is deducted for the wrong answer. To pass the exam you must get at least 5 points. Sigmundur is very bad at the study material and therefore decides what the correct answer is in each question. What are the chances that Sigmundur will pass the exam? 1. about 2%. 2. about 7%. 3. about 14%. 4. about 21%.A poll of 1000 voters has Biden leading by 538 to 462. What will the pollster indicate as the "margin of error"?Determine whether or not proportions of voters favoring the democrat candidate were the same in both states. Is first proportion (p1 ) the same as (p2)? What formula from this week notations and symbols would be applicable in the hypothesis test? Not doing hypothesis test but which formula
- Ms. Hammell and Mrs. Clark drew marbles from a mystery jar of 100 marbles. Ms. Hammell drew 55 pink marbles and Mrs. Clark drew 70 pink marbles. Find p hat, standard error, and margin of error for Ms. Hammell and Mrs. Clark.At the regional track tournament the top three finishers in each race place themselves into the state competition. If there are 15 runners in a 1600 m run and I am one of them. What are the chances that I could place and get to go to state?When the ballots in box 1 were counted, there were 5,180. In box 2 there were 4,848, and in box 3 there were 2,784. Jessica received 2/5 of the votes. How many votes did she receive?
- Solve using Baye's Theorem. Show complete solution. Please don't solve if not Baye's Theorem. A large industrial firm uses 3 local motels to provide overnight accommodations for its clients. From past experience it is known that 20% of the clients are assigned rooms at the Ramada Inn, 50% at the Sheraton, and 30% at the Lakeview Motor Lodge. If the plumbing is faulty in 25% of the rooms at the Ramada Inn, in 35% of the rooms at the Sheraton, and in 40% of the rooms at the Lakeview Motor lodge, what is the probability that A. a client will be assigned a room with faulty plumbing? B. a person with a room having faulty plumbing was assigned accommodations at the Lakeview Motor Lodge? C. a person with a room having no faulty plumbing was assigned accommodations at the Lakeview Motor Lodge?If 6units get 50% and 50units get 25%, how much percentage does 27 get?You take an exam that contains 20 multiple-choice questions. Each question has 4 possible options. You know the answer to 10 questions, but you have no idea about the other 10 questions so you choose answers randomly. Your score X on the exam is the total number of correct answers. Find the PMF of X. What is P(X > 15)?