Please create PowerPoint Slides and speech notes. Deadline — 10/21/2021
October 18, 2021
PRIORITISE TOP TUTOR The a-s-s-e-s-s-m-e-n-t will be 4 pages long.
October 18, 2021

1. Write the null and alternative hypotheses for the following


1. Write the null and alternative hypotheses for the following (use symbols):

a. Two tailed Z test

i. H0:

ii. H1:

b. One Tailed Z Test

i. H0:

ii. H1:

2. Find the area under the normal curve for the following problems

a. Area between 2 sd above and the mean (z scores of 0 and 2.0)

b. Area below z score of 1

c. Z score below which 95% of all values fall

3. Fill in the following table about Type I and Type II errors


Decision   you 



Fail to reject the null hypothesis   (Accept)

Reject the null hypothesis


True nature of the null hypothesis

The null hypothesis is really true


The null hypothesis is really false

4. What is power and what is the formula for power?

5. Compute the z scores for the following scores from a sample with a standard deviation of 10 and a mean of 50:

a. 78

b. 92

c. 38

d. 44

–Continued next page–

6. Compute the one sample Z-test for the following problems.

A test is conducted for H0: μ = 40, with σ = 5. A sample size of 100 is selected= 42.2

a. What is the null and alternative hypothesis for a 2-tailed test of significance?

b. Compute the SEM for this problem.

c. Compute the one Sample Z-test for this problem.