Asked by
Camila Albuquerque
on Oct 12, 2024
Verified
Marc wants to know if the mean age of the employees at his company is less than 26 years.He obtains a random sample of 100 employees,and finds a mean age of 25.1 years and a standard deviation of 9.2 years.
A) Fail to reject the null hypothesis of μ = 26 with a P-value of 0.1635.There is not sufficient evidence that the mean age is less than 26 years.
B) Reject the null hypothesis of μ = 26 with a P-value of 0.0425.The evidence suggests that the mean age is less than 26 years.
C) Fail to reject the null hypothesis of μ = 26 with a P-value of 0.8365.There is not sufficient evidence that the mean age is less than 26 years.
D) Reject the null hypothesis of μ = 26 with a P-value of 0.018.There is sufficient evidence that the mean age is less than 26 years.
E) There is not enough information to perform the test.
Mean Age
The average age of all individuals in a specific group, calculated by adding their ages together and dividing by the number of individuals.
Null Hypothesis
A statement or idea that posits no statistical significance or effect in a given set of observations, used as a starting point for testing.
- Comprehend the principle of P-value within the context of hypothesis evaluation and its analysis.
- Examine the outcomes of a hypothesis test to formulate suitable conclusions.
Verified Answer
AB
Learning Objectives
- Comprehend the principle of P-value within the context of hypothesis evaluation and its analysis.
- Examine the outcomes of a hypothesis test to formulate suitable conclusions.