Answer:
Last option
Step-by-step explanation:
If we extract a sample of size n from a normal population and we want to estimate the population mean then the confidence interval for the mean will be:
Where
Where is an estimator for the mean μ.
n is the sample size and s is its standard deviation.
is the level of significance
= 1-Confidence Level
Then 
Then the 99% confidence interval for the population mean is
Answer:
1 subtracted from the variable w.
:)
Answer:
Step-by-step explanation:
I think the fraction version for the last one is 16/45
Answer:
4
Step-by-step explanation:
We convert this word equation to a number equation, then work it out.
7+4x=23 Use 'x' for the number we want to find.
4x=16 Subtract 7 on both sides.
x=4 Divide both sides by 4
39. 8 -0.7 are multiplied together so the answer is
(-0.7)^8
= 0.05765 to nearest 100 thousandth. ( using a calculator).
40. 10^4 + 0^12 = 10,000 + 0
= 10,000
