Identify the correct analysis for the scenario. Steve wants to determine if the
ID: 3334332 • Letter: I
Question
Identify the correct analysis for the scenario.
Steve wants to determine if the mean length of movies is more than 100 minutes. He obtains the lengths of 60 movies and wants to know if this supports his belief that the mean length is over 100 minutes. How would he use the results?
A. One sample z hypothesis test about the population proportion
B. One sample z confidence interval for the population proportion
C. One sample t confidence interval for the population mean
D. One sample t hypothesis test about the population mean
2. Robert wants to know if more than half of all nku freshman have a tablet. He randomly ask 50 nku freshman if they have a tablet or not and record the responses. How would he determine if he is correct using 10% level of significance?
A. One sample z hypothesis test about the population proportion
B. One sample t hypothesis test about the population mean
C. One sample z confidence interval for the population proportion
D. One sample t confidence interval for the population mean
3. Linda wants to determine if the mean income among local residents exceeds 50,000 annually. A random sample of 75 local residents is selected and each is asked for their annual income. How would she use the results?
A. One sample z confidence interval for the population proportion
B. One sample t hypothesis test about the population mean
C. One sample t confidence interval for the population mean
D. One sample z hypothesis test about the population proportion
Explanation / Answer
Solution:-
1) (D) One sample t hypothesis test about the population mean.
2) (A) One sample z hypothesis test about the population proportion.
3) (B) One sample t hypothesis test about the population mean.