Margin of error formula:
ME = z * (Sigma) / √ n
z = 1.96 for a 95 % confidence interval;
Sigma = 3 ( the population standard deviation )
n = 500
ME = 1.96 * 3 / √500 =
= 1.96 * 3 / 22.36 =
= 5.88 / 22.36 = 0.263
Answer:
The margin error for a 95% confidence interval is 0.263.
A positive number
This is because you must add to get from a negative number in order to get to a positive number.
Answer:
C
Step-by-step explanation:
I don't actually know how to explain it but,
Q1=43.5
Q2=44
Q3=48.5
Sorry, I can't help more.
Answer:
Step-by-step explanation:
|E| + |F|
|1| + |-10|=11
Answer=11
Answer: 47 students
Step-by-step explanation:
430 students went on a trip with the majority of them going on buses.
7 students however, had to use cars.
The number of students who used buses are:
= 430 - 7
= 423 students
The number of students in each bus is:
= No. of students taking buses / no. of buses
= 423 / 9 buses
= 47 students
