Question

1)You are conducting a study to see if the average female life expectancy is significantly more than 93. If your null and alternative hypothesis are:

H 0 : μ ≤ 93

H 1 : μ > 93

Then the test is:

two tailed

right tailed

left tailed

2)

If your null and alternative hypothesis are:

H0:μ=40H0:μ=40
H1:μ>40H1:μ>40
Then the test is:

right tailed

two tailed

left tailed

3)

Below is a hypothesis test set up by a student who recently took introductory statistics:

H₀: x = 5

H_A: x ≠ 5

The sample mean of 100 cases used to implement the hypothesis test is x = 4.2. Which of the following statements are accurate?

i. This is a one-sided hypothesis test.

ii. There is an error in how these hypotheses were constructed.

iii. It would be reasonable to swap "<" for "≠" in the alternative hypothesis.

i only

ii only

iii only

i and ii

i and iii

ii and iii

Answer 1

1)You are conducting a study to see if the average female life expectancy is significantly more than 93. If your null and alternative hypothesis are:

H 0 : μ ≤ 93

H 1 : μ > 93

Then the test is:[ right tailed]

2}

H0:μ=40
H1:μ>40
Then the test is:

[Right tailed]

3)

i. This is a one-sided hypothesis test.

ii. There is an error in how these hypotheses were constructed.

iii. It would be reasonable to swap "<" for "≠" in the alternative hypothesis.

Answers:- [ ii and iii ]