Ayoung investment manager tells his client that the probability of making a positive return with his suggested portfolio is 80%. if it is known that returns are normally distributed with a mean of 5.8%, what is the risk, measured by standard deviation, that this investment manager assumes in his calculation?

The risk, measured by standard deviation, that this investment manager assumes in his calculation is 0.0689

Step-by-step explanation:

Let X = rate of return

Since his client wants to make a positive return:

X > 0

P(X > 0) = 0.8

P(Z > (0-0.058)/sd) = 0.8

(0-0.058)/sd = -0.8416

-0.058/-0.8416 = standard deviation

standard deviation = 0.0689

Therefore, The risk, measured by standard deviation, that this investment manager assumes in his calculation is 0.0689

45

step-by-step explanation:

the highest percentage for deaths in construction from highest to lowest is as follows: falls, struck by objects, electrocution, and caught-in/between. these four are collectively known as fatal four.

in the case of falls, the type that is responsible for the overall highest death in the category is falls from roofs.