If the Critical region exists on both sides of the mean then the test is referred as?

a) Bull Curved Test

b) Normal Tail Test

c) Two tail test

d) One tail test

The probability that the test statistic will fall inside the region of rejection due to chance alone is equal to which of the following probabilities?

a) 1-Beta

b) 1-Alpha

c) Alpha

d) Beta

Each of the following are true with respect to Hypothesis testing except for:

a) f the null hypothesis is not rejected, it does not mean the null is true

b) here are no exceptions, because all of the statements are true.

c) by failing to reject the null hypothesis, one has not proven that the alternative hypothesis is correct

d) the statement of the alternative hypothesis always contains an equal sign

Which of the following statements is false?

a) Null hypothesis refers to a specified value of a sample statistic.

b) null hypothesis refers to a specified value of the population parameter.

c) The statement of Null hypothesis always contains an equality.

d) The statement of Ha (alternate hypothesis) never contains an equality.

If a one-tailed test for a proportion is being performed and the upper critical value is +2.33 and the test statistic is equal to +1.37, then

a) the null hypothesis should be rejected.

b) the null hypothesis should not be rejected.

c) the alternative hypothesis must be accepted.

d) the sample size should be decreased.

What is the obtained value of an integral that is based on an imaginary number but has now been standardized to be a Z value.

a) 0

b) 7

c) -1

d) 4

e) 1

You have been hired to help elect a politician to office. You wish to know which form of advertising will result in the best outcome. You divide your participants into 3 groups, with 9 people in each group. Group one listens to positive ads only, group 2 listens to negative ads only and groups 3 listens to both positive and negative ads. You then record each person's response as a grade of between 0 to 100. What are/is your degree(s) of freedom?

a) 27

b) 25

c) 26

d) 24

e) 24 and 2

f) 24 and 1

g) 24 and 3

To investigate the efficacy of a diet, a random sample of 16 male patients is drawn from a population of adult male volunteers is collected. The weight of each individual in the sample is taken at the start of the diet, and at a medical follow-up four weeks later. Assume that the population of differences in weight before versus after the diet follow a normal distribution. What would be the appropriate statistical test to conduct the hypothesis test?

a) Z test for the difference between two proportions

b) Z test for the difference between two means

c) Pooled-Variance t Test for the difference between two means

d) Paired t-test