Pengujian Hipotesis 1

Which of the following shows a right-tailed test?

• Ha: µ < 15
• H₀: µ < 15
• Ha: µ > 15
• H₀: µ > 15

In testing hypotheses, which of the following would be strong evidence against the null hypothesis?

• using a small level of significance
• using a large level of significance
• obtaining data with a small p-value
• obtaining data with a low test statistic

A P-value indicates:

• the probability that the null hypothesis is true
• the probability that the alternative hypothesis is true
• the probability of obtaining the results (or one more extreme) if the null hypothesis is true
• probability of a Type I error

Suppose the P-value for a hypothesis test is 0.0304. Using a = 0.05, what is the appropriate conclusion?

• a) Reject the null hypothesis

• b) Reject the alternative hypothesis

• c) Fail to reject the null hypothesis

• d) Fail to reject the alternative hypothesis

When p-value is greater than alpha we:

• Reject Ho

• Fail to reject Ha

• Fail to reject Ho

• Reject Ha

Define a Type I error?

• The failure to reject a false null hypothesis
• Rejecting a true null hypothesis
• The acceptance to reject a null hypothesis
• Accepting a true null  hypothesis

When do you use a t-value instead of a z-value? 

• When n < 30
• When n ≥ 30
• When all of the data normally distributed

• When sig. alpha = 5%

A __________ occurs if you accept the null hypothesis when it is false.

• Type I error

• Type II error

A __________ occurs if you reject the null hypothesis when it is true.

• Type I error

• Type II error

What is the 5 steps procedure for hypothesis testing?

• 1) State the hypotheses and identify the claim

  2) Find the critical value

  3) Compute the test value

  4) Summarize the results

  5) Make the decision (reject or not reject)

• 1) State the hypotheses and identify the claim

  2) Compute the test value

  3) Find the critical value

  4) Make the decision (reject or not reject)

  5) Summarize the results

• 1) State the hypotheses and identify the claim

  2) Find the critical value

  3) Compute the test value

  4) Make the decision (reject or not reject)

  5) Summarize the results