document.write( "Question 1122258: Edy grows carrots. At the end of the season the carrots are large and old and have to be sold off cheaply.\r
\n" ); document.write( "\n" ); document.write( "X is the random variable for the weight of one carrot in grammes. The expected value of X is E(X) = 450 and the variance Var(X) is 9.\r
\n" ); document.write( "\n" ); document.write( "Edy makes up bags of the old carrots by putting 13 carrots into each bag. \r
\n" ); document.write( "\n" ); document.write( "Let Y be the random variable for the total weight, in grammes, of the 13 carrots in a bag. Calculate the expected value of Y, E(Y), and the standard deviation of Y, SD(Y), and enter your answers below.
\n" ); document.write( "The expected value of Y is E(Y) = Answer for part 1\r
\n" ); document.write( "\n" ); document.write( "If we assume that the weights of each of the carrots are independent of each other, then the standard deviation of Y is SD(Y) = Answer for part 2
\n" ); document.write( " (to 1 d.p.)\r
\n" ); document.write( "\n" ); document.write( "(Just put in the values, with no units.)\r
\n" ); document.write( "\n" ); document.write( "Thank you so much for the help \n" ); document.write( "

Algebra.Com's Answer #738424 by Boreal(15235) $\"\"$ $\"About$

You can put this solution on YOUR website!
E(X)=450
\n" ); document.write( "sd(X)=3, sqrt of var (X)
\n" ); document.write( "weight of 13 grams of carrots would have and E(X) of 13*450=5850
\n" ); document.write( "sd of this would be 13*sqrt(Var)=39
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