The following contingency table summarizes the drug test results for 444 test-takers:PositiveNegativeTotalDoesn't use drugs7193Uses drugs23311TotalFor a randomly selected test administration, find the following probabilities. (Round the answers to 4decimal places.)1) The probability that the test-taker uses drugs:2) The probability of a true positive:3) The probability of an error:

Answered: The following contingency table…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Q1. It is reported that the percentage of people in a small village that have health insurance is 80%. If 17 people are randomly selected, the find the following (a) The probability that 7 of them have health insurance. (b) The probability that at least 10 have health insurance.
1. Use this table for the following questions: Female Male TotalShort Hair 20 40 60 Long Hair 30 10 40 Total 50 50 100 a. Complete a total probability table.b. Complete a row probability tablec. Complete a column probability table.d. The probability that a student does not have long hair. _________e. The probability that a student is male or has short hair. ________f. The probability that a student is a female and has long hair. _________g. The probability that a student is male, given that the student has long hair. _________h. The probability that a student has long hair, given that the student is male. _________i. Of all the female students, the probability that a student has short hair. ________j. Of all students with long hair, the probability that a student is female. _________k. The probability that a student is female or has long hair.…
A test was given to a group of students. The grades and gender are summarized below A B C Total Male 8 13 6 27 Female 11 14 3 28 Total 19 27 9 55 If one student is chosen at random from those who took the test,Find the probability that the student was male GIVEN they got an 'A'.
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A test was given to a group of students. The grades and gender are summarized below A B C Total Male 18 5 8 31 Female 3 2 20 25 Total 21 7 28 56 If one student is chosen at random from those who took the test,Find the probability that the student got a 'B' GIVEN they are female.
A certain virus affects 0.7% of the population. A test used to detect the virus in a person is positive 88% of the time if the person has the virus (true positive) and 13% of the time if the person does not have the virus (false positive) Fill out the remainder of the following table and use it to answer the two questions below based on a total sample of 100,000 people. a. Find the probability that a person has the virus given that they have tested positive. Round your answer to the nearest hundredth of a percent and do not include a percent sign. b. Find the probability that a person does not have the virus given that they test negative. Round your answer to the nearest hundredth of a percent and do not include a percent sign.
A test was given to a group of students. The grades and gender are summarized below If one student is chosen at random from those who took the test, Find the probability that the student was female GIVEN they got a 'B'.
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A test was given to a group of students. The grades and gender are summarized below A B C Total Male 4 2 3 9 Female 8 5 9 22 Total 12 7 12 31 If one student is chosen at random from those who took the test,Find the probability that the student got a 'B' GIVEN they are male.
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a. The population Proportion p=? b. The sample proportion is? c.Find the standard error?
A test was given to a group of students. The grades and gender are summarized below A B C Total Male 6 12 18 36 Female 3 8 14 25 Total 9 20 32 61 If one student is chosen at random from those who took the test,Find the probability that the student got a 'B' GIVEN they are male.

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