On a random cross medical checkup in Muscat airport, the statistic shows 45% of the travelers are form region A, 35% are form region B, and 20% are form region C. The Medicine doctors have found that 6% of the travelers form region A, 7% of the travelers form region B, and 5% of the travelers form region C are infected by COVID-19. One week later, an infected traveler went for recheck-up. Find the probability he/she region B?

On a random cross medical checkup in Muscat airport, the statistic shows 45% of the travelers are form region A, 35% are form region B, and 20% are form region C. The Medicine doctors have found that 6% of the travelers form region A, 7% of the travelers form region B, and 5% of the travelers form region C are infected by COVID-19. One week later, an infected traveler went for recheck-up. Find the probability he/she region B?

Name: QUESTION 4On a random cross medical checkup in Muscat airport, the st
Uploaded: 2024-03-20T07:06:16.000Z
Channel: Bartleby
Description: QUESTION 4On a random cross medical checkup in Muscat airport, the statistic shows 45% of the travelers are form region A, 35% are form regionB, and 20% are form region C. The Medicine doctors have found that 6% of the travelers form region A, 7% of

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...

See similar textbooks

Similar questions

Suppose a researcher conducted a study examining the effectiveness of font type (OpenDyslexic vs. Times New Roman) on reading comprehension for 20 students with dyslexia. After reading a passage in one of the two fonts, 10 students in each of the two font conditions completed a brief reading comprehension test of 15 questions. The number of correctly answered questions for each student is given in the table below: Complete the following in the context of conducting data analysis/ a. Calculate the average number of correct test questions for each group b. Calculate the standard deviation for each group c. Calculate the median and mode for both groups d. Calculate the interquartile range for each group OpenDyslexic 10 9 11 8 24867 12 14 Times New Roman 6675 & Na 43 4 2 8 9
The FAA is interested in knowing if there is a difference in the average number of on-time arrivals for four of the major airlines. The FAA believes that the number of on-time arrivals varies by airport, therefore, a randomized block design is used for the study. To control for this variation, they randomly select 100100 flights for each of the major airlines at each of four randomly selected airports and record the number of on-time flights. Can the FAA conclude that there is a significant difference among the average number of on-time arrivals for the four major airlines? The results of the study are as follows. Average Number of On-Time Arrivals Airport Airline A Airline B Airline C Airline D Airport A 9090 8282 8080 8383 Airport B 8282 7070 7474 7979 Airport C 8787 8484 7676 8888 Airport D 9090 7979 7979 9090 Copy DataANOVA Source of Variation SSSS dfdf MSMS Rows 181.6875181.6875 33 60.562560.5625 Columns 278.6875278.6875 33 92.895892.8958 Error…
Due to the alarming cases of Covid-19, a researcher wanted to study the characteristics of the patients in NCR infected by the virus. Lilliefors, a researcher, considered the following variables: M: age bracket (0-19, 20-39, 40-59, 60 and above) N: last country visited in the past 3 months O: number of days quarantined after manifestation of symptoms P: current status of the patient (mild, moderate, severe) 6. To answer the objective of the study, Lilliefors used different data collection methods. First, she gathered information about the variables of interest by letting the patients answer a self-administered questionnaire. Second, to supplement the data she gathered, she collected the sociodemographic profile of the patients using the data from the Department of Health. The methods of data collection used by Lilliefors are ________. A. objective and subjective, respectively B. subjective and objective, respectively C. objective and use of existing records, respectively…
The Canadian Federation of Independent Business (CFIB) sent an online survey to 3000 small businesses in Canada asking many questions as to how they were affected by the Covid-19 sanitary restrictions over the last two years. Of the 229 businesses that responded to the CFIB survey, 37.1 % reported that they were negatively affected. An equivalent provincial association in Quebec (AGAP) had just conducted a similar survey among its 250 members. Among the 24 AGAP members who responded to the same question, 7 of them said they were negatively affected. Do you have any reason to doubt that, statistically, the AGAP respondents can be considered part of the same population of CFIB respondents? Provide a statistical argument using a cut-off point (red flag) of 5%.
Twenty university students chosen at random from students enrolled at Carthage College took part in an experiment testing the effect of watching ABC News versus CNN on knowledge of world events. The 20 participants were divided randomly into two equal groups of 10 students each. One group was assigned to watch ABC and the other was assigned to watch CNN. Participants then watched their assigned station (ABC or CNN) for 3 hours a night for 4 weeks. At the end of the 4 week period they were administered a test of world knowledge. The results were as follows: XbarABC = 104; sABC = 12 XbarCNN = 99; sCNN = 10 Compute the 95% confidence interval around the difference between the two groups.
The improved crop varieties are evaluated at farmers fields before their release for a large scale production. The claim made by a chickpea breeder is that, on average, her improved variety produces higher yield of chickpea compared to the local variety grown by farmers in her region. To examine her claim, the improved variety of chickpea was evaluated at 25 randomly selected farmer-fields (farms) in that region. Each field was divided into two parts, one part of the field was randomly assigned to the improved variety to be grown under a crop management practice recommended for this variety, and the other part to the local variety with an ongoing practice followed for it. You may note there were 25 different fields and the two varieties were grown within each of them. The chickpea yields of the two varieties were measured, in kg per hectare, from each of the fields. The following R- code outputs contain the information that you may use to answer the questions. The data vectors,…
A small epidemiological study was carried out in which we selected 100 women over the age of 60 with endometrial (uterus) cancer and 100 women over the age of 60 without endometrial cancer. All 200 women were contacted and asked, “Were you obese at age 50?” Among those with endometrial cancer, 75 said they were obese at age 50; amongthose without endometrial cancer, 60 said they were obese at age 50. Study design options: Ecological, Cross-sectional, Case Control, Prospective Cohort, RetrospectiveCohort, Randomized Clinical Trial
A researcher wants to conduct a study to determine whether a newly developed anti-tardy program is successful. Two random groups of 100 students each, identified as control and treatment groups, are formed from 200 students who are repeatedly late to school. Both groups receive a set of anti-tardy reading materials and a lecture from a teacher and a tardy-reformed student about the negative impacts of being late. In addition, the treatment group also receives materials from the newly developed program. Thirty-three of the 100 students in the control and 35 of the 100 students in the treatment group are no longer late to school is recorded 6 months later. Use the results to test the hypotheses H0: p1 = p2 and Ha: p1 ≠ p2 where p1 represents the proportion of students who succeed in the control program and p2 represents the proportion of students who succeed in the newly developed program. What can you conclude using the significance level α = 0.05? Group of answer choices The new…
Sickle-cell anemia is a hereditary chronic blood disease that is extremely severe when an individual carries two copies of the defective gene. It is particularly common in countries plagued by malaria, a parasiticinfection transmitted by mosquitoes. A study in Africa tested 543 children for the sickle-cell gene and also for malaria. In Group 1 which consisted of 136 children with the sickle-cell gene, 36 children had severe malariainfections. Group 2 consisted of 407 children without the sickle-cell gene, and 152 of them had severe malaria infections. Conduct a test to determine if the proportion of severe malaria infections among children withthe sickle-cell trait is different from that among children without. Test at 5% level of significance. Question: What is your p value and t statistic ?
A researcher took a random sample of 200 new mothers in the United States (Group 1) and found that 16% of them experienced some form of postpartum depression. Another random sample of 200 new mothers in France (Group 2), where mothers receive 16 weeks of paid maternity leave, found that 11% experienced some form of postpartum depression. Can it be concluded that the percent of women in the United States experience more postpartum depression than the percent of women in France? Use α=0.05. Select the correct alternative hypothesis and decision
In a certain population, 11% of people are infected by a certainvirus. A virus detection test correctly detects 94% of cases in whichindividuals are infected, but mistakenly assigns 6% of positive resultsfor the uninfected (false positives). How likely is it that a person's testof this population give a positive result?
A Journal published longitudinal study of hearing impairment in a group of elderly patients with intellectual disabilities. The hearing function of each patient was screened each year over a 10 - year period. At the study's conclusion, the hearing loss of each patient was categorized as severe, moderate, mild, or none. The classification of the 28 surviving patients are summarized in the following table. Hearing loss Number of Patients None 7 Mild 7 Moderate 9 Severe 5 Total 28 Conduct a test to determine whether the trueproportions of intellectually disabled elderly patients in each ofthe hearing-loss categories differ. Use a 5% significance level. We are doing this on a Ti84 plus Calculator.