In June 2013, the mayor of New York City proposed a limit of at most 16 ounces o

Question

In June 2013, the mayor of New York City proposed a limit of at most 16 ounces on sugary beverages sold in restaurants. He argued that limiting sugar intake would lower rates of obesity and diabetes.   A Gallup poll used a random sample of 1015 US adults on June 15-16. They asked if people support a ban on sugary beverages with over 16 ounces in restaurants. Only 485 respondents said they favored the ban.  

QUESTION 6 What distribution should you use as a reference to obtain a p-value?

Question 6 options:

Normal

t with 1 degree of freedom

t with 484 degrees of freedom

t with 1014 degrees of freedom

Normal

t with 1 degree of freedom

t with 484 degrees of freedom

t with 1014 degrees of freedom

Explanation / Answer

A normal distribution should be used to obtain a P value as here the parameter is the popuation proprtion.

The sample proprtion is: 485/1015=0.47

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