Translate that to english please?
Answer: root of 18
9+9=x^2
18=x^2
x = 3 root of 2 or root of 18
Answer:
Answer: 12
Step-by-step explanation:
Answer:
The z-distribution should be used for this problem.
Step-by-step explanation:
The population distribution is assumed to be normal. Which distribution to use?
If we have the standard deviation for the sample, we use the t-distribution.
If we use the standard deviation for the population, we use the z-distribution.
There is a known standard deviation of 2.2 minutes.
This means that 2.2 is the population standard deviation, and thus, the z-distribution should be used for this problem.
Answer:
40
Step-by-step explanation:
you add all the numbers up then divide by how many numbers there are
