Answer: 12.48
Step-by-step explanation:
38x38+bxb=40x40
1444+b=1600
1600-1444=156
=12.48
Answer:[tex]y=-4x^2 -8x-6
Step-by-step explanation:
The measure represents the standard deviation of the sample means and is used in place of the population standard deviation when the population parameters are unknown is; t-test.
<h3>Which measure is used when the population parameters are unknown?</h3>
A hypothesis test for a population mean when In the case that the population standard deviation, σ, is unknown, carrying out a hypothesis test for the population mean is done in similarly like the population standard deviation is known. A major distinctive property is that unlike the standard normal distribution, the t-test is invoked.
Read more on t-test;
brainly.com/question/6501190
#SPJ1
To be the best you can be at whatever you're practicing. Just because you can't be perfect doesn't mean you can't be very good at it.
Answer:
I think this is the answer I hope I have helped you
Step-by-step explanation:
a
b
