Hypothesis Testing Quiz

Which of the following refers to an intelligent guess about a population proportion?

• Decision

• Hypothesis

• Interpretation

• Test statistic

Which of the following serves as a guide in deciding whether to accept or reject the null hypothesis?

• Acceptance region

• Confidence level

• Decision Rule

• Interpretation

Under the normal curve, what do you call the values that separate the rejection region from the acceptance region?

• Confidence coefficients

• z-values

• Computed statistics

• t-values

What are the critical values if the level of significance is 0.01 and it is a two-tailed hypothesis test?

• ± 1.90

• ± 1.96

• ± 2.00

• ± 2.58

How many samples are needed for the sample size to be considered large?

• n>10

• n > 30

• n > 50

• n > 100

What statistical test for hypothesis is used when sample size is more than 30 and standard deviation is unknown?

• p

• r

• t

• z

If p_o = 0.67, what is q_o?

• 0.33

• 0.35

• 0.36

• 0.37

When the null hypothesis is rejected, which of the following is true?

• The conclusion is guaranteed.

• The conclusion is not guaranteed.

• There is a sufficient evidence to back up the decision.

• There is no sufficient evidence to back up the decision.

In a z-test of proportion, what does it mean when the computed z lies in the rejection region?

• The sample proportion is equal to the population proportion

• The sample proportion is equal to the hypothesized proportion.

• The sample proportion is not equal to the population proportion.

• The sample proportion is not equal to the hypothesized proportion.

What is the significance of the rejection region?

• The rejection region has no significance.

• If the test statistic lies outside the rejection region, we will accept the null hypothesis.

• If the test statistics lies inside the rejection region, we will accept the null hypothesis.

• If the test statistics lies outside the rejection region, we will reject the null hypothesis.