Answer:
The standard deviation of the sample mean differences is _5.23_
Step-by-step explanation:
We have a sample of a population A and a sample of a population B.
For the sample of population A, the standard deviation
is

The sample size
is:
.
For the sample of population B, the standard deviation
is

The sample size
is:
.
Then the standard deviation for the difference of means has the following form:

Finally

Answer: square root
Step-by-step explanation:
So first you add up the total number of marbles
4+6+3=13
For basic probability like this, you put the number of the color you want over the total number of marbles.
This will make your answer C 4 in 13
Answer:33 units
Step-by-step explanation: