A randomized experiment was performed to determine whether two fertilizers, A and B. give different yields of tomatoes. A total of 33 tomato plants were grown; 16 using fertilizer A, and 17 using fertilizer B. The
distributions of the data did not show marked skewness and there were no outliers in either data set. The results
of the experiment are shown below.

The answer is    (d) 7/2======we have    we also  have an integral      notice how function f splits up at x = 0. there's a left piece and a right pieceso we'll need to do the same thing with our integral: split it at x = 0we use a property of integrals that allows us to split up and sum:     notice that for the piecewise function f, the function has the equationf(x) = x when x  ≤ 0. so for the integral  , f(x) = x so it changes into      for the piecewise function f, the function has the equationf(x) = x+1  when x  > 0. for the integral  , we have    therefore, back to our splitted integral:    

To communicate effectively, you must understand the various factors that can affect the exchange of messages and to use communication techniques that are most appropriate for each individual situation.