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kotegsom [21]
3 years ago
15

A shareholders' group, in lodging a protest, claimed that the mean tenure for a chief executive office (CEO) was at least eight

years. A survey of companies reported in the Wall Street Journal found a sample mean tenure x = 7.56 of years for CEOs with a standard deviation of years s = 6.67 years.
A. Formulate hypotheses that can be used to challenge the validity of the claim made by the shareholders' group.
B. Assume 70 companies were included in the sample. What is the p-value for your hypothesis test?
C. At α = 0.02, what is your conclusion?
Mathematics
1 answer:
viva [34]3 years ago
5 0

Answer:

could be c might be a also

Step-by-step explanation:

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It takes 3 minutes to walk 37.5 meters what is the speed.
VLD [36.1K]
You have to divide the amount of meters he walked by the time he spent, so 37.5 divided by 3. That equals 12.5 meters per minutes.
5 0
3 years ago
If C(x) is the cost of producing x units of a commodity, then the average cost per unit is c(x) = C(x)/x. Consider the cost func
nadya68 [22]

Answer:

a) C(1,000)=288,491.11 $

b) c(1,000)=288.49 $/u

c) dC/dx(1,000)=349.74 $/u

d) x=100 u

e) c=220 $/u

Step-by-step explanation:

(a) Find the total cost at a production level of 1000 units.

C(x) = 2,000 + 160x + 4x^{3/2}\\\\C(1,000)=2,000 + 160(1,000) + 4(1,000)^{3/2}\\\\C(1,000)=2,000+160,000+126,491.11= 288,491.11

(b) Find the average cost at a production level of 1000 units.

c(x)=C(x)/x\\\\c(1,000)=C(1,000)/1,000=288,491.11/1,000=288.49

(c) Find the marginal cost at a production level of 1000 units.

\frac{dC}{dx} =0+160+4*(3/2)x^{3/2-1}=160+6x^{1/2}\\\\dC/dx|_{1,000}=160+6*(1,000)^{1/2}=160+189.74=349.74

(d) Find the production level that will minimize the average cost.

c=2,000x^{-1}+160+4x^{1/2}\\\\dc/dx=2,000(-1)x^{-2}+0+4(1/2)x^{-1/2}=0\\\\-2,000x^{-2}+2x^{-1/2}=0\\\\2x^{-1/2}=2,000x^{-2}\\\\x^{-1/2+2}=1,000\\\\x^{3/2}=1,000\\\\x=1,000^{2/3}=100

(e) What is the minimum average cost?

c(x) = 2,000/x + 160 + 4x^{1/2}\\\\C(100)=2,000/100 + 160 + 4(100)^{1/2}=20+160+40=220

5 0
3 years ago
What’s the answer y’all
Ilia_Sergeevich [38]

Answer:

C

Step-by-step explanation:

If you add all of the numbers together and divide by the total (15) you would get 11.333

(7+8+8+9+11+11+12+12+12+12+12+13+14+14+15) divided by 15 equals 11.3333

7 0
3 years ago
Rewrite without parentheses.<br> -3a^2c^4(5c^3+4a-8)<br> Simplify your answer as much as possible.
yanalaym [24]

Answer:

=−15a2c7−12a3c4+24a2c4

Step-by-step explanation:

6 0
3 years ago
Are the data shown in this line plot skewed left, skewed right, or not skewed? skewed right not skewed skewed left Line plot ove
Nimfa-mama [501]
The Answer is Shewed Left
7 0
3 years ago
Read 2 more answers
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