Answer:
The standard error of the mean is 0.0783.
Step-by-step explanation:
The Central Limit Theorem helps us find the standard error of the mean:
The Central Limit Theorem estabilishes that, for a random variable X, with mean
and standard deviation
, a large sample size can be approximated to a normal distribution with mean
and standard deviation
.
The standard deviation of the sample is the same as the standard error of the mean. So

In this problem, we have that:

So



The standard error of the mean is 0.0783.
Answer:
20
Step-by-step explanation:
130-110
Q3-Q1=IQR
Hope this helps!
Answer:
x+6<20
x<14
Step-by-step explanation:
Answer:
66045 ways
Step-by-step explanation: There are actually total of 37 student, and total of 4 jobs. But if the jobs are to be done by only one person each, then we are selecting 4 students.
So the number of ways of selecting 4 out of 37 using combination is
=37C4
=37!/(37-4)!(4!)
=37!/33!4!
=66045