Consider the table of HIV tests from before:HIV PositiveNot HIV Positive(negative)Positive579971054Negative318,94318,946Total6019,94020,0001. The probability of randomly choosing someone who is negative and positive.2. The probability of randomly choosing someone who is negative and tests positive.3. The probability of randomly choosing someone who is negative and then choosing someonewho is positive.4. The probability of randomly choosing someone who is negative or choosing someone who ispositive.5. The probability of randomly choosing someone who is positive or tests negative.

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Answered: Consider the table of HIV tests from…

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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9. To investigate how often families eat at home, a researcher surveyed 100 adults living with children under the age of 18 years. The survey results are shown below. What is the probability that a randomly selected family eats at least two meals at home per week? Number of Meals eaten at home per week 0 1 2 3 or more Number of Survey Responses 25 30 25 20
Giving a test to a group of students, the grades and genders are summarized below A B Total Male 10 7 8 25 Female 12 3 17 32 Total 22 10 25 57 If one student was chosen at random, 1. Find the probability that the student got a B. Answer: 0.1754 2. If the chosen student was male, find the probability that this student got a grade C or B. Answer:
Organ Donors USA Today provided information about a survey of 5100 adult Internet users. Of the respondents, 2346 said they are willing to donate organs after death. In this survey conducted for Donate Life America, 100 adults were surveyed in each state and the District of Columbia, and results were weighted to account for the different state population sizes. a. What percentage of respondents said that they are willing to donate organs after death? b. Based on the poll results, what is the probability of randomly selecting an adult who is willing to donate organs after death? c. What term is used to describe the sampling method of randomly selecting 100 adults from each state and the District of Columbia?
Use the following results from a test for marijuana use. Among 144 subjects with positive test results, there are 21 false positive results. Among 139 negative test results, there are 4 false negative results. a. How many subjects are included in the study? b. How many of the subjects had a true negative result? c. What is the probability that a randomly selected test subject had a true negative result?
The accompanying table describes the random variable x, the numbers of adults in groups of five who reported sleepwalking. Complete parts (a) through (d) below. Click the icon to view the table. a. Find the probability of getting exactly 4 sleepwalkers among 5 adults. (Type an integer or a decimal. Do not round.)
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!
Find the probability of student being both female and good?
Construct all random samples consisting two observations from the given data. You are asked to guess the average weight of the six watermelons by taking a random sample without replacement from the population. Watermelon A, B, C, D, E, and F has a weight (in pounds) 19,14,15,9,10 and 17 respectively.a. What is the probability of getting 10.00 as a mean?b. How many possible outcomes?c. What is the probability of getting 11.50 as a mean?d. What is the mean of the sampling distribution of the sample means?e. What is the population mean?
KE It is estimated that 1.9% of the parts produced by a certain factory's assembly line will be defective. If 700 parts are selected at random, find the probability that at least 10 parts are defective. Click here to view page 1 of the Areas under the Normal Curve Table. Click here to view page 2 of the Areas under the Normal Curve Table The probability that at least 10 parts are defective is (Round to four decimal places as needed.).
Four coins are tossed, and the number of heads is recorded. Shade the region on the histogram that gives the indicated probability. P(x > 2) Which of the following shaded regions gives the indicated probability? (Type A, B, C, or D.) A) 0.5- 0.38- 0.25- 0.13- 0- 0.5- 0.38 0.25- 0.13- लट 0 1 2 3 4 01 2 3 4 B) D) 0.5- 0.38- 0.25- 0.13- 0- 0.5- 0.38 0.25 0.13- 0- 0 1 2 3 4 0 1 2 3 4
Please explain your answers . Thank you.
A random sample of 1700 Texas government employees were selected for a study on race. The table below shows the results of the survey. Outcome White The racial distribution for the state of Texas is shown in the second column below. Fill in the expected frequencies. (Round to the nearest whole number). Hispanic Black Observed Frequencies of Race from the Sample Outcome Observed Frequency White 697 Hispanic 714 Other Black Other 136 153 Frequencies of Race Expected Percent 37 41 10 12 Expected Frequency

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