Answer:
n = 100 customers
X = 80 who paid at the pump
A) the sample proportion = p = X / n = 80 / 100 = 0.8
we can definitely state that 80% of the customers paid at the pump.
B) if we want to determine the 95% confidence interval:
z (95%) = 1.96
confidence interval = p +/- z x √{[p(1 - p)] / n}
0.80 +/- 1.96 x √{[0.8(1 - 0.8)] / 100}
0.80 +/- 1.96 x √{(0.8 x 0.2) / 100}
0.80 +/- 1.96 x √{(0.8 x 0.2) / 100}
0.80 +/- 1.96 x 0.4
0.80 +/- 0.0784
confidence interval = (0.7216 ; 0.8784)
C) We can estimate with a 95% confidence that between 72.16% and 87.84% of the customers pay at the pump.
Green fund with year 1return of -9.5℅ and year two return of +10℅
Answer:
a. 17.5
b. 12
Explanation:
Given that
Marginal cost = $100
The computation of optimal contract length is given below :-
Marginal benefit = Marginal cost (length
)
a. $100 = 30 + 4L
L = 70 ÷ 4
= 17.5
b) 100 = 40 + 5L
L = 60 ÷ 5
= 12
Therefore, for calculating the optimal contract length simply we calculate both the equations equals with marginal benefit to the marginal cost (length)
I would go with B
They most certainly have not eliminated hunger and does not have an international armed force.
<span>Johanna must come up with 800 more dollars in order to pay her college tuition. This number is calculated by multiplying 8,000 by 10% (or .10). When these calculations are completed, you get the number 800. Because the college tuition increases by 10%, calculating 10% of 800 tells you the amount risen due to inflation.</span>
