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.
What is it about, I’ll give it a try
(3x^5y)^2=
3^2=9
(x^5)^2=x^10
y^2=y^2
(3x^5y)^2=9x^10y^2
9x^10y^2(4x^3y^5)=
9*4=36
x^10*x^3=x^13
y^2*y^5=y^7
9x^19y^2(4x^3y^5)= 36x^13y^7
Final answer: 36x^13y^7
Answer:
Dave bought the clock for $300. Each year the value of the clock increased by $50.
Step-by-step explanation:
B. 1/2(6x-12) = 3x -6 = 3(x-2)
D. 12x -18 + 2 = -16+12x
12x -16 = -16+ 12x
B and D are the answers
Trust me
Hope this helps!
Mark me as brainliest if you can, I really appreciate it!
