Answer:
ᛗᚨᚤᛒᛖ... (maybe...)
Step-by-step explanation:
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Answer:
88 is two real solutions, 0 is No real solution, and -21 is one solution
Step-by-step explanation:
I think I have the right answer but if not I am very sorry
Answer:
The 95% confidence interval for the population mean daily protein intake is between 69.97g and 84.03g.
Step-by-step explanation:
We have that to find our level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Ztable as such z has a pvalue of .
So it is z with a pvalue of , so
Now, find M as such
In which is the standard deviation of the population and n is the size of the sample.
The lower end of the interval is the sample mean subtracted by M. So it is 77 - 7.03 = 69.97g.
The upper end of the interval is the sample mean added to M. So it is 77 + 7.03 = 84.03g.
The 95% confidence interval for the population mean daily protein intake is between 69.97g and 84.03g.
Answer:
b = 3c
B = 4c
Step-by-step explanation:
2b + B = 8c
B - b = 2c
_____________ (-)
2b + B - B + b = 8c - 2c
3b = 6c
b = 6c : 3
b = 2c
B = 2c + b
= 2c + 2c
= 4c
X= -1 and -11
Put -1 and -11 in for x. The answer comes out 6