We have three different drugs T, F and H. Drugs Tand F cure a V virus in 60% and 80% of cases,respectively, and drug H is entered by mistake inthe prescription and if it is administered to patientswith the V virus produces serious secondaryeffects in them without curing the virus. Assumethat the effects of the 3 drugs are independent.The treatment consists: first, one of the drugs israndomly administered. After a defined time, if it isnot cured, one of the remaining drugs is randomlyadministered; if it is not cured either, then the thirdof the drugs is administered. In addition, in theface of serious side effects caused by H, thetreatment is interrupted, that is, no otherprescription is administered. What is theprobability that the patient will be cured of the Vvirus?

Given Information: There are three drugs T, F and H. Drug T cures virus V in 60% of cases. Drug F…

Answered: We have three different drugs T, F and…

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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Two random samples were drawn from members of the U.S. Congress. One sample was taken from members who are Democrats and the other from members who are Republicans. For each sample, the number of dollars spent on federal projects in each congressperson's home district was recorded. Dollars Spent on Federal Projects in Home Districts Less than S to 10 More than 5 Billion Billion 10 billion Party Row Total Democratic T 10 T 12 23 T Republican 45 12 17 18 47 Column Total 22 29 41 92 (1) Make a cluster bar graph showing the percentages of Congress members from each party who spent each designated amount in their respective home districts. (In the graphs, blue represents Democrats and red represents Republicans.) 50 40 Perntage Perertage 20 10 10 Party Bpending Party Spending Perentage Perentage 10 e ban bilan Pary Bpending Pay pendng (1) Use a 1% level of significance to test whether congressional members of each political party spent designated amounts in the same proportions. (a) What is…
A researcher thinks some social media sites are more prone to narcissistic behavior (excessive posting) than others. To examine the relationship between narcissism and social media, she recruits users of three different social media sites (Facebook, Twitter and Instagram), follows them for 24 hours and records the number of posts made by each user. The number of posts is given in the table below. Twitter Facebook Instagram 10 7 14 10 8. 10 10 10 11 9. www. 12 wwww. 11 13 12 8. 7 8. 11 8 10 12 11 11 a. Perform a complete hypothesis test to determine whether there are any significant differences among the three groups. Test at the .05 level of significance. SHOW ALL YOUR WORK b. Do you need to perform post hocs? Explain but do not compute the post hocs. C. Compute effect size. d. Summarize your findings in a source table. e. Write an interpretation of our results in APA-format (include means and SDs in your interpretation)
An end of year Mathematics exam for grade 11 students consists of two papers. Paper A and Paper B. The marks in both papers for 7 students are shown below. Student 1 Student 2 Student 3 Student 4 Student 5 Student 6 Student 7 63 55 48 50 55 75 92 66 Раper A Раper A 84 53 55 84 84 42 А. = 0.7098 + 0.8117x = 0.7098 + 0.8655x В. У - C. y = 0.6052 + 0.8117x D. y = 0.6052 + 0.8655x
A doctor wants to develop a pill to help people with peanut allergies. Her goal is to prevent the dangerous symptoms that occur when a person allergic to peanuts contacts the nuts. She splits her patients into two groups. The first group receives the new pill, and the second group receives a pill with inactive ingredients. Over the course of a couple of months, all patients are tested for desensitization of peanuts. Treatment: Placebo:
Suppose the entire cola industry produces only two colas. Given that a person last purchased cola 1, there a 70% chance that her next purchase will be cola 1. Given that a person last purchased cola 2, there is an 75% chance that her next purchase will be cola 2. Suppose that each customer makes one purchase of cola during any week (52 weeks=1 year). Suppose there are 150 million customers. One selling unit of cola costs the company $0.5 to produce and is sold for $2. For $200 million per year, Britney Spears (by an advertising song) guarantees to decrease from 30% to 15% the fraction of cola 1 customers who switch to cola 2 after a purchase. Should the company that makes cola 1 hire Britney Spears?
A manufacturing company employs two inspecting devices to sample a fraction of their output for quality control purposes. The first inspection monitor is able to accurately detect 99.3% of the defective items it receives, whereas the second is able to do so in 99.7% of the cases. Assume that four defective items are produced and sent out for inspection. Let X and Y denote the number of items that will be identified as defective by inspecting devices 1 and 2, respectively. Determine the following. 1) fxy(x,y) 2) fx (x)3) fY|2 4) E(x)Show all work
An industrial concern has experimented with several different mixtures of the fourcomponents—magnesium, sodium nitrate, strontium nitrate, and a binder—that comprise arocket propellant. The company has found that two mixtures, in particular, give higher flare illumination values than the others. Mixture 1 consists of a blend composed of the proportions.40, .10, .42, and .08, respectively, for the four components of the mixture; mixture 2 consists ofa blend using the proportions .60, .25, .10, and .05. Twenty different blends (10 of each mixture)are prepared and tested to obtain the flare-illumination values. These data appear here (in unitsof 1,000 candles).Mixture 1 185 192 201 215 170 190 175 172 198 202Mixture 2 221 210 215 202 204 196 225 230 214 217a. Plot the sample data. Which test(s) could be used to compare the meanillumination values for the two mixtures?b. Give the level of significance of the test and interpret your findings

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