4.31 A multiple-choice question on a test has five answers. If Dianne chooses one answer based on "pure guess," what is the probability that her answer is a. correct? b. wrong? Do these two probabilities add up to 1.0? If yes, why?
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- Please recheck and provide clear and complete step-by-step solution in scanned handwriting or computerized output thank youThe CDC did a study on various ways to quit smoking. The results of the study are shown below. Nicotine Gum Nicotine Patch Nicotine Inhaler Still Smoking 191 263 95 Quit Smoking 59 57 27 Suppose a person in the study is chosen randomly. What is the probability that the person was still smoking given that they used the nicotine gum? T T T ArialApproximately 18% of shoppers used cellphones to look for deals. THe probability of making a purchase was 0.45 if a person used a cell phone to shop. For a randomly selected shoppers, what is the probability that the person used a cell phone and made a purchase?
- A university student faces a statistics exam, which offers 4 response possibilities. The probability that said student knows the answer to the question is 80% while the probability that he asks it randomly is 20%, also if the student asks it randomly, the probability that he chooses the correct answer is 20%. 25% So if the student answers a question correctly, what is the probability that she actually knows the answer? what is the correct? a. 0.05 b. 0.85 c. None of the above d. 0.9411Attorneys often use lie detectors to test if a suspect is speaking the truth or not. It is found that the lie detector gives a positive result 64% of the time. The suspect is found to lie for 81% of the positive results and 15% of the negative results. a. If a suspect is actually lying, what is the probability that the lie detector gives a positive test result? b. If the suspect is not lying, what is the probability that the lie detector gives a negative result? Note:Answer in exact fraction, or rounded to at least 4 decimal placesAn IQ test contains (20) multiple choice questions. You have to answer all of these questions knowing that the pass grade for this test is to answer (10) or more questions correctly. Assume that you will answer the questions randomly and the probability for answering each question correctly is (0.6).A. What is the probability that you will pass the test?B. What is the probability that you will answer all questions correctly?C. What is the probability that you will answer all questions wrongly?D. What is the probability that you will answer at most three questions wrongly?E. What is the probability that you will answer at least three questions correctly?F. What is the probability that you will answer the first three questions correctly?G. What is the probability that you will answer only the first three questions correctly?
- Given that the probability of a family owning a dog is 0.91, and the probability of a family owning a cat and a dog is 0.15, what is the probability of a family owning a cat given that the family owns a dog?Q11 At a soccer (aka football) game, the probability of a goal keeper saving from a penalty kick is 0.3. After facing five different penalty kicks, assuming each penalty kick is independent, what is the probability that the goal keeper saves exactly three of the penalty kicks?In an experiment, college students were given either 4 quarters or a one dollar bill and they could either keep some money or spend it on gum. find the probability of randomly selecting a student who spent the money, given that the student was given for quarters. What do the preceding results suggest?
- Answer sub part DWhich of the following do you think could possibly be true? A. The number of students enrolled at a university decresed by 100% from last year B. The probability that an NFL team win the super bowl this year is 110% C. A student flips a coin 10 times and obeserves 65% of the time the coin lands on tails D.85% of students at a university are enrolled full-TimePlease solve all 3 sub-parts. Do not answer if you can't answer all parts. Show all steps. Analyzing the data of GOT viewers showed that about 40% of viewers were 14 orolder. If 15 GOT viewers are surveyed, find the following probabilities. a. At least 4 of them are 14 or older. b. Exactly 10 of them are 14 or older.c. Less than 5 of them are 14 or older.