A) the solar installation generates electric power from sunlight and incurs operating costs for cleaning
the solar modules (sometimes called solar panels) and replacing solar modules that have failed. the
annual revenue from the electric power is variable due to variable cloudiness and solar module failure
and has a mean of $2.78m and a standard deviation of $0.32m. the annual operating costs have a mean
of $0.51 and a standard deviation of $0.12m.

calculate the mean and standard deviation of the annual profit

answer; institution based;

answeraccounts;

two years ago, when picking flowers in the mountains back of yosemite valley, i found a book. it was blotted and storm-beaten; all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however; many of the inner pages were well preserved. and although all were more or less stained and torn, whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today; its granite pages have been torn and blurred by the same storms that wasted the castaway book.

two years ago, when picking flowers in the mountains back of yosemite valley; i found a book. it was blotted and storm-beaten, all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however, many of the inner pages were well preserved. and although all were more or less stained and torn; whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today, its granite pages have been torn and blurred by the same storms that wasted the castaway book.