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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The class I'm taking is statistics! I am completely stuck. Need help. I have attached the problem. Please view attachment before answering. Thank you!
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?
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?
7. Aaron purchased 19 video games. The defect rate for these types of video games is 1.8%. What is the probability that at least three of the video games he purchased are defective?
If the Jiffy Oil service rate for changing the oil in passenger cars is seven cars per hour. What is the probability that in the next hour, more than four car will need their oil changed? 0.8331 0.1669 0.8522 0.2946
c. What is the z-score/how many standard errors away is an average of 12 hours for a sample of size 81? What is the probability that it would take on average over 12 hours for the 81 taxpayers to finish their form 1040? Would you find this unusual? O yes no d. What is the z-score/how many standard errors away is an average of 12 hours for a sample of size 100? What is the probability that it would take on average over 12 hours for the 100 taxpayers to finish their form 1040? Would you find this unusual? no O yes e. What is the z-score/how many standard deviations away is 12 hours for one tax-payer? What is the probability that it would take one person over 12 hours to finish their form 1040? Would you find this unusual? yes
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.
To avoid detection at customs, a traveler places 7 narcotic tablets in a bottle that contains 14 apparently similar vitamin pills. If the customs officer selects 7 of the tablets at random from the bottle for analysis. What is the probability that the traveler will be arrested for illegal possession of narcotics? Answer: Answer What is the probability that the traveler will not be arrested for illegal possession of narcotics? Answer: Answer What is the average number of narcotic pills the customs officer can find? (if not an integer, round up to the next integer) Answer: Answer Note: Answer with at least 4 decimal places
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?
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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