You have been assigned to determine whether more people prefer Coke or Pepsi. Assume that roughly half the population prefers Co
1 answer:
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Answer:
Now we just take square root on both sides of the interval and we got:
And the best option would be:
A. 2.2 < σ < 2.8
Step-by-step explanation:
Information provided
represent the sample mean
population mean
s=2.4 represent the sample standard deviation
n=83 represent the sample size
Confidence interval
The confidence interval for the population variance is given by the following formula:
The degrees of freedom are given by:
The Confidence is given by 0.90 or 90%, the value of and
, the critical values for this case are:
And replacing into the formula for the interval we got:
Now we just take square root on both sides of the interval and we got:
And the best option would be:
A. 2.2 < σ < 2.8
Answer:
Given: Gables property Corp is leasing office buildings with an area of
⇒ Area =
we can write this as:
Area = .....[1]
Use the identity formula:
then, by using this formula in [1] we have;
Area =
or
Area = square units
Area of building = where l is the length and w is the width respectively;
⇒ units
Therefore, the possible length and width of the building is;
l = 7x+5 units
w = 7x+5 units
As we know that the Area of a square is equal to side times side . Since each side of a square is the same, it can simply be the length of one side squared.
Therefore, the possible shape of the building is Square.