Answer:
The 98% confidence interval for the mean consumption of milk among people over age 32 is between 3.3 and 3.5 liters.
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 
.
That is z with a pvalue of 
, so Z = 2.327.
Now, find the margin of error 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 3.4 - 0.1 = 3.3 liters
The upper end of the interval is the sample mean added to M. So it is 3.4 + 0.1 = 3.5 liters
The 98% confidence interval for the mean consumption of milk among people over age 32 is between 3.3 and 3.5 liters.
Answer:
Check pdf
Step-by-step explanation:
Answer:
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Answer:
Where the width is W feet long, the area of the rectangle in terms of a polynomial
= 3W² - 2W
Step-by-step explanation:
The area of a rectangle is the product of the length and the width of the rectangle. Given that a rectangle has a Length L feet and a width W feet, the area A
= L * W
If the length of a rectangle is two feet less than three times the width.then
L = 3W - 2
The area A
= (3W - 2) * W
= 3W² - 2W
