M8: Hypothesis Testing Review Quiz

Which of the following is the symbol for the null hypothesis?

• $H_o$

• $H_a$

• $\mu$

• $z_x$

Tags

CCSS.HSS.IC.B.3

What is the only option for the null hypothesis? 

• H₀ = k
• H₀ > k
• H₀ < k
• H₀ ≠ k

Which of the following is NOT an option for an alternate hypothesis?

• H_a = k

• H_a > k

• H_a < k

• H_a ≠ k

Which of the following shows a right-tailed test?

• Ha: µ = 15

• Ha: µ < 15

• Ha: µ > 15

• Ha: µ $\ne$ 15

H₀: μ = k

H₁: μ ≠ k

• Left-tailed test

• Two-tailed test

• Right-tailed test

Which of the following represents the appropriate null & alternative hypotheses?

The mean height of women is greater than 64"

• H₀: μ = 64"

  Hₐ: μ ≠ 64"

• H₀: μ = 64"

  Hₐ: μ > 64"

• H₀: p > 64"

  Hₐ: p ≠ 64"

• H₀: p = 64"

  Hₐ: p > 64"

A mayor is concerned about the percentage of city residents who express disapproval of his job performance. His political committee pays for a newspaper ad, hoping to keep his disapproval rating below 21%. They will use a follow up poll to access effectiveness. What are the correct null and alternative hypotheses?

• Ho: μ = 21

  Ha: μ < 21

• Ho: p = .20

  Ha: p < .20

• Ho: p = .21

  Ha: p > .21

• Ho: p = .21

  Ha: p < .21

It is said that 60% of families own a pet. Of a sample of 95 families, 70 owned pets. Perform a hypothesis test to determine whether the percent of families who own pets is different than 60%.  Use a  $\alpha=0.01$  level of significance.  

• $H_0:\ \ P=60$
  $H_1:\ \ P\ne60$
  

• $H_0:\ \ P=0.60$
  $H_1:\ \ P\ne0.60$
  

• $H_0:\ \ \mu=60$
  $H_1:\ \ \mu\ne60$
  

• $H_0:\ \ \mu\ge60$
  $H_1:\ \ \mu\le60$
  

When p-value is greater than alpha we:

• Reject Ho

• Fail to reject Ha

• Fail to reject Ho

• Reject Ha

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