Question
In 2000, 6% of people used cocaine. This year, a company wishes to use their employment drug screening to test a claim. They take a
In 2000, 6% of people used cocaine.
This year, a company wishes to use their employment drug screening to test a claim. They take a simple random sample of 2903 job applicants and find that 134 individuals fail the drug test for cocaine. They want to test the claim that the proportion of the population failing the test is lower than 6%. Use .005 for the significance level. Round to three decimal places where appropriate.
Hypotheses:
Ho:p=6%
H1:p<6%
Test Statistic: z =
Critical Value: z =
p-value:
Conclusion About the Null:
- Reject the null hypothesis
- Fail to reject the null hypothesis
Conclusion About the Claim:
- There is sufficient evidence to support the claim that the proportion of the population failing the test is lower than 6%
- There is NOT sufficient evidence to support the claim that the proportion of the population failing the test is lower than 6%
- There is sufficient evidence to warrant rejection of the claim that the proportion of the population failing the test is lower than 6%
- There is NOT sufficient evidence to warrant rejection of the claim that the proportion of the population failing the test is lower than 6%
Do the results of this hypothesis test suggest that fewer people use cocaine? Why or why not?
Step by Step Solution
There are 3 Steps involved in it
Step: 1
Get Instant Access to Expert-Tailored Solutions
See step-by-step solutions with expert insights and AI powered tools for academic success
Step: 2
Step: 3
Ace Your Homework with AI
Get the answers you need in no time with our AI-driven, step-by-step assistance
Get Started