1. The probability of rejecting the null hypothesis that is true is known as the ?

Type 1 error

Type II error

statistical power

confidence level

2. Power is defined as?

the probability that you will retain/keep the null hypothesis if it is false

the probability that you will reject the null hypothesis if if is true

determined by your research hypothesis only

the probability that you will reject the null hypothesis if it is false

3. Two random samples have sizes of n=100 and n=75 respectively. Which of the following is true for a 95% confidence level?

The sample of n=75 has a greater degree of confidence

The sample of n=100 has a greater degree of confidence

The confidence interval of sample of n=100 is narrower

The confidence interval of sample n=100 is wider

4. The statistical process of using samples to estimate population parameters is known as:

statistical interference

statistical inference

statistical confidence

descriptive statistics

4. If a researcher wishes to determine where there is evidence that the mean fasting glucose levels in adults with DM 2 is difference from 110mg/dl then

a two-dependent sample t-test should be considered

a two-independent sample t-test should be considered

a one-sample t-test should be considered

either a one-sample or two dependent sample t-test should be considered