QUIZ: Intro to Hypothesis Testing

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

The mean height of women is greater than 64"

• H₀: μ > 64"

  H₁: μ ≠ 64"

• H₀: μ = 64"

  H₁: μ > 64"

• H₀: p = 64"

  H₁: p ≠ 64"

• H₀: p = 64"

  H₁: p > 64"

Tags

CCSS.HSS.IC.A.1

Which of the following shows a right-tailed test?

• H₁: µ < 15

• H₀: µ < 15

• H₁: µ > 15

• H₀: µ > 15

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?

• H₁ = k

• H₁ > k

• H₁ < k

• H₁ ≠ k

Tags

CCSS.HSS.IC.B.5

The weight of the average 6th grade student's backpack (with books in it) is 18.4 lbs. The principal of the school thinks that the backpack does not weight 18.4 lbs. What is the null and alternate hypothesis?

• H₀: μ = 18.4

  H₁: μ = 18.4

• H₀: μ = 18.4

  H₁: μ > 18.4

• H₀: μ = 18.4

  H₁: μ < 18.4

• H₀: μ = 18.4

  H₁: μ ≠ 18.4

A car manufacturer advertises that its new subcompact models get 47 mpg. If μ is the mileage of these cars, what could be the null and alternate hypothesis if we wanted to check if the car's mpg is overrated?

• H₀: μ = 47

  H₁: μ = 47

• H₀: μ = 47

  H₁: μ < 47

• H₀: μ = 47

  H₁: μ > 47

• H₀: μ = 47

  H₁: μ ≠ 47

In a hypothesis test, the alternative hypothesis is always a statement of equality. 

• True
• False

At the Chrysler manufacturing plant, there is a part that is supposed to weigh precisely 19 pounds. The engineers take a sample of parts and want to know if they meet the weight specifications. What are our null and alternative hypotheses?

• H_o : μ = 17

  H₁ : μ ≠ 19

• H_o : μ = 19

  H₁ : μ ≠ 19

• H_o : μ = 19

  H₁ : μ ≠ 17

• H_o : μ = 17

  H₁ : μ ≠ 17

Use the notation to state the alternative hypothesis and null hypothesis: "Less than 4% of high school students take Statistics."

• H_o : p = 0.04

  H₁ : p > 0.04

• H_o : p = 0.04

  H₁ : p < 0.04

• H_o : p = 0.04

  H₁ : p ≠ 0.04

• H_o : p = 0.04

  H₁ : p ≤ 0.04

Tags

CCSS.HSS.IC.B.5

The null and alternative hypothesis can be the same.

• Yes

• No

• Maybe

• All the above