conceptual review for Hypothesis test

What is the 5 steps procedure for hypothesis testing?

• 1) State the hypotheses and identify the claim

  2) Find the critical value

  3) Compute the test value

  4) Summarize the results

  5) Make the decision (reject or not reject)

• 1) State the hypotheses and identify the claim

  2) Compute the test value

  3) Find the critical value

  4) Make the decision (reject or not reject)

  5) Summarize the results

• 1) State the hypotheses and identify the claim

  2) Find the critical value

  3) Compute the test value

  4) Make the decision (reject or not reject)

  5) Summarize the results

Which of the following is an example of a statement of a null hypothesis?

• As the amount of sugar intake increases, your insulin also increases.

• We have proves that Virus X is transmitted by droplets.

• There is a significant difference between your grades in Math and Science.

• There is no significant difference between the blood type and the weight of a person.

The null and alternative hypothesis can be the same.

• Yes

• No

• Maybe

• All the above

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

• True
• False

A statement that proposes that something is different, incorrect, or changed from what is accepted or claimed.

• Research Question
• Null Hypothesis
• Alternative Hypothesis
• Placebo Effect       

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

H₀: μ = k

H₁: μ < k

• Left-tailed test

• Right-tailed test

Generally a statement of “no effect”, stating that there is no difference between what is claimed and what is measured.

• Null Hypothesis
• Placebo Effect       
• Alternative Hypothesis
• Control Group

If an individual rejects a true null hypothesis, then he/she has

• Made a correct decision to reject null hypothesis

• Made Type II Error

• Increased the power of a statistical test

• Made Type I Error