Answer:
Use the normal distribution if the population standard deviation is known.
Use the student's t distribution when the population standard deviation is unknown.
Explanation:
A mound-shaped distribution refers to the normal distribution.
A good sample size for testing against the normal distribution should be
n >= 30.
The condition for the sample size is satisfied.
However, we are not given the population standard deviation, therefore it is assumed to be unknown.
Therefore the student's t distribution should be used.
Answer: $13.25 each ticket
Step-by-step explanation: 530 divided by 40
Answer:
You need more information. But typically multiplly by 100 so .1 would be 10 %
Step-by-step explanation:
What does gas cost answer then I will give you the answer
Answer:
You can use a number line to subtract -6 from -7. The difference is -1.