dom Module 4 Part 3: Addition & multiplication rule; contingency tablesExample 4: Screenings for Marijuana UseThe results from a study using the 1-panel-THC test for marijuana use are summarized as follows: Among 143subjects with positive test results, there are 24 false positive results; among 157 negative results, there are 3false negative results. Use this information to answer the following questions.(a) What is the probability that a randomly selected subject did not use marijuana?(b) If one of the test subjects is randomly selected, find the probability that the subject tested positive orused marijuana.gravians 19 ansbne 08 anosmoz er tos143lidedong ort à forW nocz 1 suisson to the albaM(c) If one of the test subjects is randomly selected, find the probability that the test subject testednegative or did not use marijuana.Ad(d) If one of the test subjects is randomly selected, find the probability that the subject actually usedmarijuana.CE(e) Find the probability of a false positive or a false negative. What does the result suggest about thetest's accuracy?(g) How do the results from (e) and (f) relate to each other?(f) Find the probability of a correct result correct result by finding the probability of a true positive ortrue negative.60

Given Information: 143 subjects have positive test results, out of which 24 subjects have false…

Answered: Example 4: Screenings for Marijuana Use…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

In Hawaii shark attacks are very rare. Furthermore, about 55% of all shark attacks are serious, but not fatal. You are scheduled to give a talk at a local scuba club in Honolulu and want to include a brief statistical profile regarding the most recent eight shark attacks, all of which were nonfatal. Let r be the number of nonfatal attacks out of a random sample of eight shark attacks. So, what is the probability that five or more of the eight shark attacks are nonfatal? (Round your answer to three decimal places.)
A random sample of 88 U.S. 11th-12th graders was selected. The two-way table summarizes the gender of the students and their response to the question “Do you have allergies?” Suppose we choose a student from this group at random. If the student has allergies, what is the probability that the student is female?
Use the data in the following table that shows results from a polygraph (lie detector) conducted by researchers Charles R. Honts and Gordon H. Barland. In each case, it was known if the subjects lied or did not lie, so the table indicates when the polygraph was correct. If two different subjects are randomly selected without replacement, find the probability that they both lied.
Five percent of all blue ray players manufactured by a large electronics company are defective. A quality control inspector randomly selects three players from the production line. What is the probability that exactly one of these three blue ray players is defective?
A recent survey of post-secondary education students in Canada revealed that 76% are confident in their ability to manage their finances.You are to randomly pick 30 post-secondary education students across the country, and ask each the following question: Are you confident in your ability to manage your finances? You have defined the random variable X to represent the number, out of 30 post-secondary students chosen, who respond YES.(a) What is the probability that 22 of these post-secondary students respond YES?P(X=22)= _________(use four decimals in your answer) (b) What is the probability that between 14 and 20 of these students will respond YES?P(14≤X≤20)=_________(use four decimals in your answer) (c) How many of the 30 post-secondary students would you expect to respond YES? Find the standard deviation as well.E(X)=μX=_________(use two decimals in your answer) SD(X)=σX=_________ (use two decimals in your answer)
In an inspection of automobiles in a certain Country, 60% of all automobiles had emissions that did not meet EPA regulations. For a random sample of 10 automobiles, compute the following probabilities: a. All 10 automobiles failed the inspection. b. Exactly 6 of the 10 failed the inspection. c. Six or more failed the inspection. d. All 10 passed the inspection.
An article summarizes a report of law enforcement agencies regarding the use of social media to screen applicants for employment. The report was based on a survey of 734 law enforcement agencies. One question on the survey asked if the agency routinely reviewed applicants' social media activity during background checks. For purposes of this exercise, suppose that the 734 agencies were selected at random, and that you want to use the survey data to decide if there is convincing evidence that more than 25% of law enforcement agencies review applicants' social media activity as part of routine background checks. The sampling distribution of p̂ describes the behavior of p̂ when random samples are selected from a particular population. Describe the shape, center, and spread of the sampling distribution of p̂ for samples of size 734 if the null hypothesis H0: p = 0.25 is true. (Round your answers to three decimal places.)
The National Longitudinal Study of Adolescent Health interviewed several thousand teens (grades 7 to 12). One question asked was "What do you think are the chances you will be married in the next 10 years?" Here is a two-way table of the responses by gender: HP S Ass Opinion Female Male cha Almost no chance 119 114 139 156 Some chance but probably not A 50-50 chance 446 493 A good chance Almost certain 718 728 1177 759 a. How many individuals are described in this table? b. How many females were among the respondents? C. The percent of females among the respondents was about

Recommended textbooks for you

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

Elementary Statistics: Picturing the World (7th E…

Statistics

ISBN:

9780134683416

Author:

Ron Larson, Betsy Farber

Publisher:

PEARSON

The Basic Practice of Statistics

Statistics

ISBN:

9781319042578

Author:

David S. Moore, William I. Notz, Michael A. Fligner

Publisher:

W. H. Freeman

Introduction to the Practice of Statistics

Statistics

ISBN:

9781319013387

Author:

David S. Moore, George P. McCabe, Bruce A. Craig

Publisher:

W. H. Freeman

SEE MORE TEXTBOOKS