Question

A drug testing company provides a test for marijuana use. Among 281 tested subjects, results from 27 subjects were wrong. Test the claim that less than 10% of the test results were wrong. Use a 0.05 significance level.

**1) State the** **Null Hypothesis, Alternate
Hypothesis, type of test & level of significance (2
pts)**

**2) ****Check the
conditions. (2 pts)**

**3) ****Compute the
sample test statistic. Then find the P-value. (16 pts)**

**4) Decide whether to REJECT or FAIL TO REJECT**
**the Null Hypothesis. Explain your answer. (2
pts)**

**5) ****Interpret the
conclusion. (2 pts)**

Answer #1

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.

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 309 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
less than 10 percent of the test results are wrong.
Identify the test statistic for this hypothesis
test.
The test statistic for this hypothesis test
is:
(Round to two decimal places as needed.)

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....

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...

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...

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...

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...

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...

12. A drug testing facility claims to have a test for marijuana
that is 90% reliable. In a random sample of 500 people, 67 were
falsely identified. Use a 0.05 significance level to check the
claim that less than 10% of the test results are wrong.
a. State the H0 and H1 hypothesis:
b. Find the critical value.
c. What is the test statistic?
d. What is the P-Value?
e. Does this test appear to be reliable enough for Traffic...

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