The diameters of Douglas firs grown at a Christmas tree farm are normally distributed with a mean of 3 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 4 inches

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step-by-step explanation:

should you really be posting this isn't math boi.

ummm seems that u didnt post the attachement !

answer:

step-by-step explanation:

here, the total dishes = 10

dishes having meat = 3 ( chicken, meatloaf and hamburger )

thus, the probability of having meat on the chosen dishes = number of dishes having meat / total dishes

=

therefore, the probability of not having meat = 1- the probability of having meat on the chosen dishes

=

=

=

⇒ option b is correct.