3. Researchers randomly assigned 72 chronic users of illegal substance into 3groups: (1) Desipramine, (2) Lithium and (3) Placebo.RelapseNo Relapse1018DesipramineLithiumPlaceboTOTAL2048146424TOTAL24242472a. What is the probability that a patient relapsed?b. What is the probability that a patient received desipramine and relapsed?c. If we know that a patient received the anti-depressant desipramine, what is thelikelihood that the patient will relapse?d.If we know that a patient relapsed, what is the chance that he/she was givendesipramine?

As per the Bartleby guildlines we have to solve first three subparts and rest can be reposted....…

Answered: 3. Researchers randomly assigned 72…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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2. The probability that a person has a negative side effect from a medication is .08.Suppose you treat 12 people. Assume they are independent.a. What is the probability that exactly 2 of them have a negative side effect?
5. Big babies: The Centers for Disease Control and Prevention reports that 25% of baby boys 6-8 months old in the United States weigh more than 20 pounds. A sample of 150 babies is studied. a. Approximate the probability that more than 40 weigh more than 20 pounds. b. Approximate the probability that 35 or fewer weigh more than 20 pounds. c. Approximate the probability that the number who weigh more than 20 pounds is G 20
11 A Gallup Poll of U.S. adults indicated that Kentucky is the state with the highest percentage of smokers. Consider the following example data from the Tri-State region, an area that comprises northern Kentucky, southeastern Indiana, and southwestern Ohio.State Smoker Non-SmokerKentucky 47 176Indiana 32 134Ohio 39 182Total 118 492 a Use the data to compute the probability that an adult is the Tri-State region smokes b What is the probability of an adult in each state of the Tri-State region being a smoker? Which state in the Tri-state region has the lowest probability of an adult being a smoker? Show all steps in Excel.
6. Clinical trials have shown that 90% of the patients with severe migraine experience relief of their pain after taking the drug Nimodipine. Suppose 15 migraine patients try Nimodipine. a. What is the probability all of the patients experience relief? b. What is the probability only 10 patients experience relief? What is the probability at least 12 patients experience relief? d. What is the probability at most 10 patients experience relief? e. How many are expected to experience relief?
A manufacturer received an order of 105 computer chips. Unfortunately, 5 of the chips are defective. To test the shipment, the quality-control engineer randomly selects 5 chips from the box of 105 and tests them. What is the probability of obtaining 2 defective chips? O A. 0.01675 O B. 0.10328 O C. 0.19528 O D. 0.02833
Refer to the sample data for pre-employment drug screening shown below. If one of the subjects is randomly selected, what is the probability that the test result is a false positive? Who would suffer from a false positive result? Why? Pre-Employment Drug Screening Results Positive test result Negative test result Drug Use Is Indicated Drug Use Is Not Indicated Subject Uses Drugs 42 11 Subject Is Not a Drug User 17 34
4. Six employees of a marketing firm had effectiveness ratings as follows: 0.72, 0.46, 0.59, 0.64, 0.81 and 0.76. Find the probability of selecting an employee with the indicated effectiveness rating.a. Greater than 0.75. b.Less than 0.75 but greater than 0.5. c. Greater than the mean. d. Not less than 0.9.
1. In a factory that produces pieces of ready-made concrete, if the percentage of production of defective blocks is 0.6, if we draw a sample of 5 pieces: find the probability of getting 3 defective pieces. *
5.Approximately 64% of the people murdered actually knew their murderer. Given 63 current unsolved murders, what is the probability that at least (equal to and more than) 35 victims knew their murderer?
Suppose that 30 percent of an adult population have an infectious disease and 40 percent have achronic disease. Assume that having an infectious disease is independent from having a chronicdisease. For each of the questions below perform the calculation using appropriate statisticalnotation.a. What is the probability that a person selected at random will have both diseases?b. What is the probability of having the infectious disease for people with the chronic disease?c. What is the probability of having the infectious disease for people without the chronic disease?d. What is the probability of not having the infectious disease for people with the chronicdisease?
A car insurance company has determined that 9% of all drivers were involved in a car accident last year. Among the 10 drivers living on one particular street, 3 were involved in a car accident last year. If 10 drivers are randomly selected, what is the probability of getting 3 or more who were involved in a car accident last year? O a. O b. O C. O d. 0.4435 0.9548 0.0541 0.0452
The needle used in a hypodermic syringe has to be produced according to very strict standards. As a result, approximately 1.6% of all the needles manufactured need to be discarded for defects and other imperfections. A batch of hypodermic needles contains 160 needles. a. What is the probability that at least one of the needles in the batch will be defective? b. How many needles are expected to be discarded due to imperfections? c. What is the probability that exactly that many needles (as calculated in part (c)) in a batch will need to be discarded a. P(At Least 1 Discarded) = Round to 4 significant digits b. Expected # of Needles Discarded = Round to nearest whole number c. P(Expected # of Needles Discarded) = Round to 4 significant digits

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