Unit 8 Test Review

Given a p-value of 0.0512 and

$\alpha$

= 0.05, the conclusion should be: 

• Reject  $H_o$  

• Do not reject  $H_o$  

• Reject  $H_a$  

• Do not reject  $H_a$  

If no significance level is provided, the default value of $\alpha$ should be:

• 0.01

• 0.03

• 0.05

• 0.07

Tags

CCSS.HSN.Q.A.1

The symbol for the population proportion is:

• $\overline{x}$

• $\mu$

• $p$

• $p-hat$

The symbol for the population mean is:

• $\overline{x}$

• $\mu$

• $p$

• $p-hat$

When writing the null and the alternative hypotheses, always us the symbols for:

• Sample parameters

• Population parameters

• Sample statistics

• Sometimes sample and other population

A manufacturer has a set limit that the proportion of defective items is not to be over 18%. The buyer thinks the proportions of defective items exceeds the limit. The buyer take a random sample of 90 items and finds that 19 of them are defective. State the null and the alternative hypotheses for this test.

• $H_o:\ p=0.18,\ H_a:\ p\ <0.18$

• $H_o:\ p=0.18,\ H_a:\ p\ >0.18$

• $H_o:\ p=0.18,\ H_a:\ p\ \ne0.18$

• $H_o:\ p=0.18,\ H_a:\ p\ =0.21$

A manufacturer has a set limit that the proportion of defective items is not to be over 18%. The buyer thinks the proportions of defective items exceeds the limit. The buyer take a random sample of 90 items and finds that 19 of them are defective.   The z-score is closest to:

• 0.25

• 0.75

• -0.25

• -0.75

Tags

CCSS.HSS.ID.A.4

What sample size is needed in order for conditions to be met for a significance test with means?

• 10

• 25

• 30

• 50

Tags

CCSS.HSS.ID.A.4

The mean monthly rent for one bedroom apartments in college towns around Michigan is $900. A future student group thinks that the rent is actually higher than the claim. To help them budget, the students determine the mean monthly rent of 200 different one bedroom apartments from around Michigan. State the null and alternative hypothesis for this test.

• $H_o:\ \mu=900,\ H_a:\ \mu<900$

• $H_o:\ p=900,\ H_a:\ p<900$

• $H_o:\ \mu=900,\ H_a:\ \mu>900$

• $H_o:\ p=900,\ H_a:\ p>900$

The mean monthly rent for one bedroom apartments in college towns around Michigan is $900. A future student group thinks that the rent is different than $900. To help them budget, the students determine the mean monthly rent of 200 different one bedroom apartments from around Michigan.  State the null and alternative hypothesis for this test.