Question

Married at 25. A study suggests that the 25% of 25 year olds have gotten married. You believe that this is incorrect and decide to collect your own sample for a hypothesis test. From a random sample of 25 year olds in census data with size 776, you find that 24% of them are married. A friend of yours offers to help you with setting up the hypothesis test and comes up with the following hypotheses. Indicate any errors you see.

Answer 1

In this example, the hypothesis are not included. Therefore, we cannot know whether there are errors in them or not. However, as the hypotheses are based on the rest of the information, we can still take a look at this.

The sample that you collected has a size of 776. This is a size that will most likely give you accurate results, as it is big enough to represent the population. Moreover, your sample is random. The results approximate those of the original study. Therefore, there does not seem to be any major mistakes in your approach to the research.

Answer 2

Answer:

Given hypothesis are

H0: A = 0.24

H1: Â ≠ 0.24

Here sample proportion  is used to express hypothesis instead of population proportion p.

The error is sample parameter  used in hypothesis [ It should be population parameter p or π )

Step-by-step explanation: