Hiring In preparing a report on the economy, we need to estimate the percentage of businesses that plan to hire additional employees in the next 60 days.

a) How many randomly selected employers must we contact in order to create an estimate in which we are 98% confident with a margin of error of 5%

We need to contact 542 employees.

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 is:

98% confidence level

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

a) How many randomly selected employers must we contact in order to create an estimate in which we are 98% confident with a margin of error of 5%

We dont know the proportion, so we use , which is when we are going to need the largest sample size.

We have to find n when M = 0.05. So

Rounding up

We need to contact 542 employees.

quit

step-by-step explanation:

according to the triangle sum theorem, all the angles in a triangle must add up to 180 degrees. if we know one angle is already 90, we do 180-90=90. the other 2 angles must add up to 90, exactly.

step-by-step explanation: