Question: Problem 2. A poll was taken this year asking college students if they considered themselves overweight (let us refer to the population this year as

Problem 2. A poll was taken this year asking college students if they considered themselves overweight (let us refer to the population this year as population 1). A similar poll was taken five years ago (let us refer to the population 5 years ago as population 2). Results are summarized below. Has the proportion of self-identified overweightincreasedsignificantlyover the 5 year?Answer question 2.1 to question 2.9 regarding problem 2.

Question 2.1. The sample proportion difference in problem 2 follows which of the following probability distribution?

Group of answer choices

Normal distribution

t distribution

Binomial distribution

Standard normal distribution

Question 2.2. What is the standard deviation of sample proportion difference in problem 2?

Question 2.5. What are the test statistics for problem 2?

Question 2.6. What is the p-value of the test statistics for problem 2?

Question 2.7. If = 0.01 is used, what is the critical value? (for multiple values, enter the positive one)

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