15. Use the following results from a test for marijuana use, which is provided by a certain drug testing company. Among 142 subjects with positive test results, there are 28 false positive results; among 150 negative results, there are 3 false negative results. If one of the test subjects is randomly selected, find the probability of a false positive or false negative. (Hint: Construct a table.) What does the result suggest about thetest's accuracy?
The probability of a false positive or false negative is
(Round to three decimal places as needed.)
What does the result suggest about the test's accuracy?
With an error rate of 0.893 (or 89.3%), the test appears to be highly accurate.
With an error rate of 0.107 (or 10.7%), the test appears to be highly accurate.
With an error rate of 0.107 (or 10.7%), the test does not appear to be highly accurate.
With an error rate of 0.893 (or 89.3%), the test does not appear to be highly accurate.
Ans:
disease | no disease | Total | |
Positive | 114 | 28 | 142 |
Negative | 3 | 147 | 150 |
Total | 117 | 175 | 292 |
P(false positive or false negative)=(28+3)/292=0.107
With an error rate of 0.107 (or 10.7%), the test does not appear to be highly accurate.
15. Use the following results from a test for marijuana use, which is provided by a...
Use the following results from a test for marijuana use, which is provided by a certain drug testing company. Among 141141 subjects with positive test results, there are 2626 false positive results; among 151151 negative results, there are 44 false negative results. If one of the test subjects is randomly selected, find the probability that the subject tested negative or did not use marijuana. (Hint: Construct a table.) The probability that a randomly selected subject tested negative or did not...
Use the following results from a test for marijuana use, which is provided by a certain drug testing company. Among 149 subjects with positive test results, there are 29 false positive results; among 160 negative results, there are 5 false negative results. If one of the test subjects is randomly selected, find the probability that the subject tested negative or did not use marijuana. (Hint: Construct a table.)
Use the following results from a test for marijuana use, which is provided by a certain drug testing company. Among 148 subjects with positive test results, there are 28 false positive results. Among 150 negative results, there are 5 false negative results. Complete parts (a) through (c). (Hint Construct a table.)a. How many subjects were included in the study?The total number of subjects in the study was _______ b. How many subjects did not use marijuana?A total of _______ subjects did...
use the following results from a test for marijuana use, which is provided by a certain drug testing company. Among 143 subjects with positive test results, there are 20 false positive results, among 158 negative results, there are4 false negative results. if one of the test sibjects is randomly selected, find the probability that the subjecttestes negative or did not use marijuana.
Use the following results from a test for marijuana use, which is provided by a certain drug testing company Among 142 subjects with positive test results, there are 29 false positive results. Among 152 negative results, there are 2 false negative results. Complete parts (a) through (c). (Hint: Construct a table.) a. How many subjects were included in the study? The total number of subjects in the study was b. How many subjects did not use marijuana? A total of...
Use the following results from a test for marijuana use. Among 154 subjects with positive test results, there are 26 false positive results. Among 137 negative test results, there are 2 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?a. There are _______ subjects included in the study.(Type a whole number.)
Use the following results from a test for marijuana use, which is provided by a certain drug testing company. Among 142 subjects with positive test results, there are 21 false positive results; among 153 negative results, there are 2 false negative results. If one of the test subjects is randomly selected, find the probability that the subject tested negative or did not use marijuana. (Hint: Construct a table.). (Do not round until the final answer. Then round to three decimal...
Use the following results from a test for marijuana use, which is provided by a certain drug testing company. Among 146 subjects with positive test results, there are 23 false positive results. Among 151 negative results, there are 3 false negative results. Complete parts (a) through (c). (Hint: Construct a table.) a. How many subjects were included in the study? The total number of subjects in the study was 297. b. How many subjects did not use marijuana? A total...
Use the following results from a test for marijuana use, which is provided by a certain drug testing company, Among 141 subjects with positive test results, there are 30 false positive results. Among 157 negative results, there are 3 false negative results. Complete parts (a) through (Hint: Construct a table) a. How many subjects were included in the study? The total number of subjects in the study was _______ . b. How many subjects did not use marijuana? A lot of _______...
Use the following results from a test for marijuana use, which is provided by a certain drug testing company. Among 150 subjects with positive test results, there are 26 false positive results. Among 160 negative results, there are 2 false negative results. Complete parts (a) through (c). (Hint: Construct a table.) a. How many subjects were included in the study? The total number of subjects in the study was .