Answer:
b. 0.67
Explanation:
UCL = 1 + 0.10
= 1.10 inch
LCL = 1 - 0.10
= 0.9 inch
standard deviation = 0.005 inch
mean = 1 inch
Cpk
= min[(UCL - mean)/(3*standard deviation) , (mean - LCL)/(3*standard deviation))]
= min[(1.10 - 1)/(3*0.05) , (1 - 0.9)/(3*0.05))]
= min[0.67 , 0.67]
= 0.67
Therefore, Theprocess capability index (Cpk) if the long-run process mean is 1 inch is 0.67
Answer:
A skilled broker will be right at 60% of time compared to 50%
Explanation:
Solution
Given that:
Now,
Let X be represented as = number of correct predictions/outcomes
X foll binomial distribution with n = 3 and p = 0.5 for broker who use a toss coin
Thus,
P(X = 3) = p^3 = 0.5^3 which gives us = 0.125
So,
For a skilled broker, Y goes with the binomial distribution with n = 3 and p is = 0.6
Then,
P(Y = 3) = 0.6^3 = 0.216
We can therefore conclude who is skilled broker by making large number of observations
Hence, we say that a skilled broker will be correct 60% of time compared to 50%
.
A tradeoff is a balance achieved between two desirable but incompatible feature. So the reasonable answer would be B
A. You have to know how much risk you are willing to take in order to figure out what sort of investments will fit your needs.
b-d are not only wrong, but very poor strategies in general.
