Astudy of recent records of car accidents revealed that average proportion of drivers who were distracted by their phones at the time of accident was 35% with a margin error of 9%. if we want a margin of error of 4%, how many records needs to be studied? (all data analysis is done at the 95% confidence level).

At least 547 records need to be studied.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of , and a confidence interval , we have the following confidence interval of proportions.

In which

Z is the zscore that has a pvalue of .

And the margin of error is:

95% confidence interval

So , z is the value of Z that has a pvalue of , so .

In this problem, we have that:

At least 547 records need to be studied.

you forgot the options, but i found them anyways, the correct answer is "john wilson believes that words and actions based on the intellect are superior to those based on emotions".

john wilson is depicted as an extremely intelligent man. the point of the excerpt is to make a sort of distinction between emotional and rational intelligence. he happens to have both attributes, but he clearly favors his intellectual gifts. at the same time, because of his religious background, he's a little bit conflicted with this and it makes him ashamed.

hope this !