Use the graph below to find the equation that it represents.
1 answer:
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Answer:
2.87%
Step-by-step explanation:
We have the following information:
mean (m) = 200
standard deviation (sd) = 50
sample size = n = 40
the probability that their mean is above 21.5 is determined as follows:
P (x> 21.5) = P [(x - m) / (sd / n ^ (1/2))> (21.5 - 200) / (50/40 ^ (1/2))]
P (x> 21.5) = P (z> -22.57)
this value is very strange, therefore I suggest that it is not 21.5 but 215, therefore it would be:
P (x> 215) = P [(x - m) / (sd / n ^ (1/2))> (215 - 200) / (50/40 ^ (1/2))]
P (x> 215) = P (z> 1.897)
P (x> 215) = 1 - P (z <1.897)
We look for this value in the attached table of z and we have to:
P (x> 215) = 1 - 0.9713 (attached table)
P (x> 215) =.0287
Therefore the probability is approximately 2.87%
Answer:
Solution is 1 (one).
Step-by-step explanation:
- The equation
can be solved by solving first the expression in the numerator. This is done by solving
.
- Then, you just have
. The negative is canceled when it appears twice, so we just have to solve
(any number divided by itself equals to one).
<span> For this case we have the following equation:
</span>
<span> Where,
x: number of chips
c (x): total cost
To find the fixed cost, we must find the intersection with the y axis of the given equation.
So we have that for x = 0:
</span>
<span>
Therefore, the fixed production cost is given by:
</span>
<span> Answer:
The fixed cost of producing the chips is:
c (0) = 12000</span>
</span>
<span> Where,
x: number of chips
c (x): total cost
To find the fixed cost, we must find the intersection with the y axis of the given equation.
So we have that for x = 0:
</span>
Therefore, the fixed production cost is given by:
</span>
<span> Answer:
The fixed cost of producing the chips is:
c (0) = 12000</span>