MATH225 WEEK 8 FINAL
Version 4
Question 1
·
1/1 points
A fitness center claims that the mean amount of time that a person spends at the gym per visit is 33
minutes. Identify the null hypothesis, H0, and the alternative hypothesis, Ha, in terms of the
parameter μ.
That is correct!
H0: μ≠33; Ha: μ=33
H0: μ=33; Ha: μ≠33
H0: μ≥33; Ha: μ<33
H0: μ≤33; Ha: μ>33
Answer Explanation
Correct answer:
H0: μ=33; Ha: μ≠33
Let the parameter μ be used to represent the mean. The null hypothesis is always stated with some
form of equality: equal (=), greater than or equal to (≥), or less than or equal to (≤). Therefore, in
, this case, the null hypothesis H0 is μ=33. The alternative hypothesis is contradictory to the null
hypothesis, so Ha is μ≠33.
Question 2
·
1/1 points
The answer choices below represent different hypothesis tests. Which of the choices are right-tailed
tests? Select all correct answers.
That is correct!
H0:X≥17.1, Ha:X<17.1
H0:X=14.4, Ha:X≠14.4
H0:X≤3.8, Ha:X>3.8
Version 4
Question 1
·
1/1 points
A fitness center claims that the mean amount of time that a person spends at the gym per visit is 33
minutes. Identify the null hypothesis, H0, and the alternative hypothesis, Ha, in terms of the
parameter μ.
That is correct!
H0: μ≠33; Ha: μ=33
H0: μ=33; Ha: μ≠33
H0: μ≥33; Ha: μ<33
H0: μ≤33; Ha: μ>33
Answer Explanation
Correct answer:
H0: μ=33; Ha: μ≠33
Let the parameter μ be used to represent the mean. The null hypothesis is always stated with some
form of equality: equal (=), greater than or equal to (≥), or less than or equal to (≤). Therefore, in
, this case, the null hypothesis H0 is μ=33. The alternative hypothesis is contradictory to the null
hypothesis, so Ha is μ≠33.
Question 2
·
1/1 points
The answer choices below represent different hypothesis tests. Which of the choices are right-tailed
tests? Select all correct answers.
That is correct!
H0:X≥17.1, Ha:X<17.1
H0:X=14.4, Ha:X≠14.4
H0:X≤3.8, Ha:X>3.8
