The mean weight of a litter of kittens is 3.1 pounds, with a standard deviation of 0.9 pound. Lawrence wants to know the weight of the kitten he is buying, but the seller only has the z-score of 1.22. How much does the kitten weigh?

Question

11 October, 11:09

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Answers (2)

Know the Answer?

Judith · Answer 1

Use z = (x - μ) / σ

Let x = weight of the kitten

1.22 = (x - 3.1) / 0.9

Solve for x.

Can you take it from here?

Aleah Ellison · Answer 2

Let x be the weight the kitten

z = (x - mean) / σ

1.22 = (x-3.1) / 0.9

(1.22) (0.9) = x - 3.1

and x = 4.198 pounds