Please use the following information to answer questions 4a-4e:

To evaluate the effect of a treatment, a sample ofn= 8 is obtained from a population with a mean of= 40, and the treatment is administered to the individuals in the sample. After treatment, the sample mean is found to bex = 35.

If the sample variance is s²= 32, are the data sufficient to conclude that the treatment has a significant effect?Use a two-tailed test with= .05.

4a. Which of the following correctly represents the null and alternative hypothesis for the mentioned sample ofn= 8 (MUST SHOW WORK FOR THIS PROBLEM)?

Ho:= 40

H_1: 40

Ho: 40

H_1:< 40

Ho:> 40 H_1: 40

Ho: 40 H_1:> 40

4b.Which of the followingrepresents the critical region for this mentioned sample(MUST SHOW WORK FOR THIS PROBLEM)?

Group of answer choices

t=2.365

t=2.306

t=2.365

t=2.306

4c.Compute the test statistic (t-observed)for the mentioned sample(MUST SHOW WORK FOR THIS PROBLEM).

4d.Based on the calculated test statistic,would you reject the null hypothesis established in question4a(MUST SHOW WORK FOR THIS PROBLEM)?

yes

no

4e.Based on the previously conducted steps,can it beconcluded that the treatment had a significant effect(MUST SHOW WORK FOR THIS PROBLEM)?

yes

no