Answer:
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.
Answer:
60
Step-by-step explanation:
m∠1=(55+65)/2=60
Answer:
C. 1
Step-by-step explanation:
The perimeter is 36 and the area is 81 units
hope this helps:)
Turn 3/4 into a fraction with a denominator of 8 by multiplying both the numerator and denominator. so you'll get 6/8 for the first one. 3/4+1/8=7/8