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:
40
Step-by-step explanation:
2 •(3(5+2)-1)
2 ·(3(7)-1)
2·(21-1)
2·20
=40
45
Find ten percent of 50 by moving the decimal point left once and subtract it from 50
Answer:
Hope It helps you :) Cause the graph haves to show two unsame activities
Step-by-step explanation:
Answer:
i think the answer is 1.33cm/s
Step-by-step explanation:
you have to use m=y2-y1/x2-x1