7b

Question 1

An important major step in the design of a research study

Answer 1

Sample size

Question 2

Mostly, it is very difficult to work with populations

Answer 2

Sample size

Question 3

Sample size required to reject or accept a study hypothesis is determined by

Answer 3

power of the study

Question 4

A study that has little chance of answering the hypothesis at hand is

Answer 4

a misuse of time and valuable resources
May unnecessarily expose participants to potential har

Question 5

Using an adequate sample size, and high quality data collection efforts will result

Answer 5

More reliable, valid and generalizable results,
Saving resources.

Question 6

Requirements of sample size determinations

Answer 6

Data type
Effect size
Level of significance
Statistical power

Question 7

Data type

Answer 7

Numerical (quantitative ) and Categorical (qualitative) data.

Question 8

Usually, categorical (qualitative) data needs……… sample size compared to numerical (quantitative ) data

Answer 8

larger

Question 9

Refers to a criterion of judgment upon which a decision is made regarding the value stated in a H0.

Answer 9

Significance level

Question 10

In significance level there is a probability of committing a Type……… error

Answer 10

I

Question 11

the probability of making a Type II error

Answer 11

Beta (β)