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.
Six is the base because 6^4 is 1296.
A: If you plug in the x and y values the inequalities are true
Answer:
32.1869
Step-by-step explanation:
multiply 20 by 1.609
multiplying miles by 1.609 will give you the answer
