. How large a sample is needed if we wish to estimate the proportion of American voters in favor of President Trump being reelected, we wish this estimate to be with in 0.038 of the true proportion, using a confidence level of 0.96. From the previous surveys, the proportion of American voters favoring his reelection to be 0.42?

We need a sample of size at least 712.

Step-by-step explanation:

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

In which

z is the zscore that has a pvalue of .

The margin of error of an interval is:

96% confidence level:

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

How large a sample is needed if we wish to estimate the proportion of American voters in favor of President Trump being reelected, we wish this estimate to be with in 0.038 of the true proportion

A sample of at least n, in which n is found when M = 0.038.

We have that

Rounding up

We need a sample of size at least 712.

109 is the nearest whole number/final answer! : )

according to this law, when unemployment goes up by 1%, gdp drops by 2%. in the question, unemployment rate goes from 2% to 5%, meaning unemployment goes up by 3%, so the gdp drops by 6%. thus the effect is a drop in gdp by 6%.

step-by-step explanation: