The diameters of Douglas firs grown at a Christmas tree farm are normally distributed with a mean of 4 inches and a standard deviation of 1.5 inches. (Round your answers to four decimal places.) (a) What proportion of the trees will have diameters between 2 and 6 inches

Proportion of the trees will have diameters between 2 and 6 inches = 0.8164

Step-by-step explanation:

Given -

Mean  = 4

Standard deviation = 1.5

Let X be the diameter of tree

proportion of the trees will have diameters between 2 and 6 inches =

  =  

                         =     Put  []

                         =  

                          =

                          = .9082 - .0918

                           = 0.8164

answer: ur mum is gay

b. 18

step-by-step explanation:

so the equation for this is:

ab^2=ac⋅ad

ab being the top length of 6 and ac being the length of 2 and ad being the length of x. let's plug into the equation:

6^2 = 2x

now lets just solve for x:

36 = 2x

18 = x

i hope that !