Unit 9 - Hypothesis Testing #1

A hypothesis test looks to compare the mean or proportion of a ______ to that of the population.

• Confidence Interval

• Sample

• Test of Significance

• Median

• Z-Score

Which hypothesis states the original claim that a population parameter is equal to a specific value?

(ex. μ = 10)

• Test Statistic

• Alternative Hypothesis

• Null Hypothesis

• Level of Significance

Which hypothesis claims that population parameter differs from the original claim?

(ex. μ < 10)

• Test of Significance

• Null Hypothesis

• Alternative Hypothesis

• Level of Significance

This symbol is used for the null hypothesis

• H₀

• H_a

This symbol is used for the alternate hypothesis

• H₀

• H_a

Match the following terms to their variable (symbol).

• H_A

• x-bar

• sample mean

• p-hat

• level of significance

• Null Hypothesis

• H₀

• Alternative Hypothesis

• sample proportion

• α

State the Null & Alternative Hypotheses.

A tire manufacturer says that their tires have an average life of 40,000 miles.  A consumer’s group thinks that the average is actually higher.

• H₀: μ < 40,000

  H_A: μ = 40,000

• H₀: μ = 40,000

  H_A: μ > 40,000

• H₀: μ = 40,000

  H_A: μ < 40,000

• H₀: μ = 40,000

  H_A: μ ≠ 40,000

State the Null and Alternate Hypotheses.

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%.

• H₀: P = .60
  H_A: P < .60
  

• H₀: P = .60
  H_A: P > .60
  
  

State the Null & Alternative Hypotheses.

The police department states that their response time is 3 minutes. The community leaders believe this is not true. 

• H₀: μ < 3

  H_A: μ = 3

• H₀: μ = 3

  H_A: μ ≠ 3

• H₀: μ ≠ 3

  H_A: μ = 3

• H₀: μ = 3

  H_A: μ > 3

State the Null and Alternate Hypotheses.

A dairy association representative says 80% of people drink the milk after they eat the cereal. You believe the true proportion is less than 80%.

• Ho: p < .80

  Ha: p = .80

• Ho: p = .80

  Ha: p < .80

• Ho: p = 80

  Ha: p < 80