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:
B. $50
C. y=25x+50
D. $550
Step-by-step explanation:
B. (0, 50) y=50
C. y=mx+b y=25x+50
D. y=25(20)+50 y=500+50 y=550
Answer:
26
Step-by-step explanation:
to get from -6 to a 0, you add 6. 0+20 is 20, so that is how you get it
3*4 + 1*5 / 5*4=
12+5/20=
17/20
Answer:
Third one C
Step-by-step explanation:
