Answer:
x=4
Step-by-step explanation:
Step 2 and 3 are incorrect,
4x+8 = 24
24-8 = 16
it should then be 4x=16
you then divide by 4 on each side
x=4
I'm sorry can you type it out? I can't see it very well
Answer:
z-test.
Step-by-step explanation:
We want to perform an hypothesis test for a population mean.
In the case that the <u>standard deviation of the population is known</u> and the population distribution is normal, even if the sample is small, <u>we will use a z-test</u>.
The usual case is to not know the standard deviation of the population, in which case a t-test is adequate instead of a z-test, taking into account the degrees of freedom of the sample.
Answer:
1100
55100=1100 x 55100
=1100x
Step-by-step explanation:
Hope it is helpful...