Homework - Hypothesis Testing in The Wild

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Reference no: EM132382195

Homework - Hypothesis Testing in The Wild

How surveys are done in real life -

In lecture 6 we looked at some data obtained from the PEW research center survey. Read the survey methodology and answer the following questions.

1. What are the population and sample?

2. What is the sampling method?

3. Name at least TWO possible sampling bias this sample can have.

4. The PEW research center weighted their sample size. What does this mean, and why did they do it?

Critical reading of news in the media -

In this exercise, you will use the same method as Lecture 6 to critically assess the following claim. Facebook is used by around half of America's teens, but it no longer dominates the teen social media landscape as it once did.

Here are the steps.

1. On what data is this claimed based on? (Name the survey source, provide link where available.)

2. For each of the survey(s) involved, write down:

a. the population

b. the sample

c. the sampling method (is it simple random sample? stratified? cluster? something else?)

d. name at least TWO possible biases.

3. What is the summary statistics (table, numbers or graphs) the authors used to back-up their claim? Is it reasonable?

4. Is what you see significant? Frame it as a hypothesis testing problem. Write down:

a. the null hypothesis

b. the alternative hypothesis

c. the test statistic you plan to use.

5. Carry out your hypothesis test above with the permutation test. Draw conclusions at 5% significance level.

Attachment:- Assignment Files - Hypothesis Testing.rar

Reference no: EM132382195

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