Question

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 22 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 nothing .

b. How many subjects did not use marijuana? A total of nothing subjects did not use marijuana.

c. What is the probability that a randomly selected subject did not use marijuana?

The probability that a randomly selected subject did not use marijuana is nothing .

Answer #1

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 20 false positive results.
Among 154 negative results, there are 5 false negative
results.
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 not use marijuana.
c. What...

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 21 false
positive results; among 155
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.)
The probability that a randomly selected subject tested negative
or did not...

In Exercises 23-26, use these results from the
I-Panel-THC .est for marijuana use, which is provided by the
company Drug test Sucess: Among 143 subjects with positive test
results, there are 24 false positive results 157 negative results,
there are 3 false negative reslts( Hint: Construct a table similar
to table 4-1, which is included with the chapter problem.
23. screening for marijuana. Use If 2 of the subjects are
randomly selected without replaement. what is the probaility tha
they...

Consider a drug testing company that provides a test for
marijuana usage. Among
287
tested subjects, results from
26
subjects were wrong (either a false positive or a false
negative). Use a
0.10
significance level to test the claim that less than
10
percent of the test results are wrong.

Consider a drug testing company that provides a test for
marijuana usage. Among 305 tested subjects, results from 26
subjects were wrong (either false positive or a false negative) Use
a .5 significance level to test the claim that less than 10% of the
test results are wrong. Identify the test statistic and the P value
for this hypothesis test.

QUESTION 91
Use the table below to find the
probability.
Positive Test Result
Negative Test Result
Subject Uses Drugs
44
(True Positive)
6
(False Negative)
Subject is Not a Drug User
90
(False Positive)
860
(True Negative)
If 2 of the 1000 test subjects are randomly selected,
find the probability that both had false positive results. Assume
that the 2 selections are made without replacement. (Round
to 4 decimals)

The company Drug Test Success provides a “1-Panel-THC” test for
marijuana usage. Among 300 tested subjects, results from 27
subjects were wrong (either a false positive or a false negative).
Use a 0.05 significance level to test the claim that over 90% of
the test results are correct.
1.Find the value of pp that should be used in this
test, based on the sample data.
2.What is the value of the test statistic, written to three
decimal places?
3.What is...

Consider a drug testing company that provides a test for
marijuana usage. Among 291tested subjects, results from 27subjects
were wrong (either a false positive or a false negative). Use a
0.05 significance level to test the claim that less than 10 percent
of the test results are wrong.
Identify the null and alternative hypotheses for this test.
Choose the correct answer below.
A.
Upper H 0
:
pless than
0.1
Upper H 1
:
pequals
0.1
B.
Upper H 0...

Consider a drug testing company that provides a test for
marijuana usage. Among 257 tested subjects, results from 28
subjects were wrong (either a false positive or a false negative).
Use a 0.05 significance level to test the claim that less than 10
percent of the test results are wrong.
Identify the null and alternative hypotheses for this test.
Choose the correct answer below. ( Round to two decimal places as
needed )
Identify the P-value for this hypothesis test....

Use the table below to find the
probability.
Positive Test Result
Negative Test Result
Subject Uses Drugs
44
(True Positive)
6
(False Negative)
Subject is Not a Drug User
90
(False Positive)
860
(True Negative)
Find P ( negative test result | subject does not use drug.)

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