7.1 Part 2 - Hypothesis Testing (Quizizz #2)

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

If a sample mean is in the critical region with alpha level 0.05, it would still (always) be in the critical region if alpha were changed to 0.01?

• False
• True

Tags

CCSS.HSS.IC.B.4

If a sample mean is in the critical region with alpha level 0.01, it would still(always) be in the critical region if alpha were changed to 0.05?

• False
• True

Tags

CCSS.HSS.IC.A.1

A z-score value in critical region means that you should reject the null hypothesis.

• True
• False

Tags

CCSS.HSS.ID.A.4

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

Tags

CCSS.HSS.IC.B.5

Which of the following is the FIRST step of a hypothesis test?

• Check assumptions & conditions
• Find your test statistic
• State your conclusion
• State your null & alternative hypotheses

• This is a LEFT tail test

• This is a RIGHT tail test

• This is a TWO tail test

You are given the following test statistics below, determine which of the test statistics would allow for you to REJECT the NULL hypothesis. The z-score or critical value for a=.05 is -1.645.

• 1.7

• -1.7

• -1.5

• 1.5

• 0.05

You are given the following test statistics below, determine which of the test statistics would cause you to FAIL to REJECT the NULL hypothesis

(mark as many as apply)

• 1.7

• -1.7

• -1.5

• 1.5

• 0.05

Mark all that apply

• this has a significance level of 0.09

• this has a significance level of 0.18

• this is two tail test

• the z-score is $\pm$ 2.3