Potatoes - Samples: Assume the weights of Farmer Carl's potatoes are normally distributed with a mean of 7.0 ounces and a standard deviation of 1.2 ounces. He bags his potatoes in groups of 6. You buy a bag and the total weight is 36 ounces. Here we determine how lucky or unlucky you are.

Solution :

Given that : mean, μ = 7, standard deviation, σ = 1.2

Therefore, the mean potato weight in the bag of 6 is

  = 6 ounces.

Here we have μ = 7, σ = 1.2, n = 6

So, z-score for is

   =

answer: a.

step-by-step explanation: the answer is a. because, you need to converge the fractions to find a solution.