Hypothesis

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

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

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 = 18.4
  H_a = 18.4
• H₀ = 18.4
  H_a > 18.4
• H₀ = 18.4
  H_a < 18.4
• H₀ = 18.4
  H_a ≠ 18.4

H₀: μ = k

H₁: μ ≠ k

• Left-tailed test

• Two-tailed test

• Right-tailed test

H₀: μ = k

H₁: μ > k

• Left-tailed test

• Right-tailed test

The average age of grade eleven students is 17 years old. This is a/an ___.

• Null Hypothesis

• Alternative Hypothesis

• Either Null or Alternative

The mean content of citric acid in a bottle of juice drinks is greater than 2 ml. This is a/an ___________________.

• Null Hypothesis

• Alternative Hypothesis

• Either Null or Alternative

The probability of committing a Type I error is also known as ____.

• Alpha Error

• Beta Error

• Either Alpha or Beta

The alternative hypothesis is expressed using less than (<) or greater than (>) is called ______ .

• Directional Test

• Non-Directional Test

• Hypothesis Test