Answer:
B
Step-by-step explanation:
We want to find the quadratic regression formula given the table.
So, let's use the quadratic regression function on your graphing calculator. I don't have one on me, but I believe you simply need to enter the data and hit quadratic regression or something similar.
I'm going to use an online quadratic regression calculator by Keisan Casio.
Refer to the screenshot.
Note that it says to use the 24-hour clock to represent time after noon. So, 2 P.M. will just be 14, 4 P.M. will be 16, etc.
Therefore, our quadratic regression equation is, approximately:
The choice that <em>best</em> represents this is B.
So, our answer is B.
And we're done!
Answer:
2000
Step-by-step explanation:
500/0.25. :) hope this helped
Answer:
2/3,3/7,5/9.
Step-by-step explanation:
I'm sure it's the right answer
Answer:
24 boxes
Step-by-step explanation:
The processor knows that the standard deviation of box weight is 0.5 pound
We are supposed to find How many boxes must the processor sample to be 95% confident that the estimate of the population mean is within 0.2 pound
Formula of Error=
Since we are given that The estimate of the population mean is within 0.2 pound
So,
z at 95% confidence level is 1.96
Hence the processor must sample 24 boxes to be 95% confident that the estimate of the population mean is within 0.2 pound