S2 Edexcel IAL Sampling Distributions and Hypothesis Tests

Complete the definition:

A _______ is a subset of a population

Complete the definition:

A _________ consists of all subjects (human or otherwise) that are being studied

The null and alternative hypothesis can be the same.

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

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

The mean height of women is greater than 64"

Identify the correct null hypothesis:

Is the proportion of babies born male different from 50%? In a sample of 200 babies, 96 were male. Test the claim using a level of significance of 1%.

Identify the correct null hypothesis:

Is the proportion of babies born male different from 50%? In a sample of 200 babies, 96 were male. Test the claim using a level of significance of 1%.

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?

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 weigh 18.4 lbs. What is the null and alternate hypothesis?

H₀: μ = k

H₁: μ ≠ k

A P-value indicates:

Suppose the P-value for a hypothesis test is 0.0304. Using a = 0.05, what is the appropriate conclusion?