Question

standard deviation help? will medal and fan

Answer 1

the weights of bags of pet food are distributed normally about the mean, 50lbs. the standard deviation is 0.2 lbs. In a group of 20 bags, about how many would you expect to be within one standard deviation from the mean? 3 bags 5 bags 8 bags 14 bags

Answer 2

i understand how to do everything else except the standard deviation.

Answer 3

i think that is the fromula

Answer 4

Do you know what percentage of items will fall within 1 standard deviation? (that is by the empirical rule, or looking it up in a normal table ) ?

Answer 5

If this looks anything familiar: \(P(-1< Z < 1)=? \)

Answer 6

it doesnt loli just started this lesson today lol hold on

Answer 7

no i dont

Answer 8

ok well.. did you see anything about the empirical rule? It states that __% of your data will be within 1 standard deviation of the mean, __% of your data will be within 2 standard deviations of the mean ... ?

Otherwise you will need to look up those values yourself in a normal table..

Answer 9

oh i think it was in the tabel nvm lol thansk for the help

Answer 10

ok awesome