Question

The price of a gallon of milk at various stores is normally distributed with a mean of $2.89 and a standard deviation of $0.2. The price of a gallon of milk at Walmart has a z-score of -1.3, while the price of a gallon of milk at Publix has a z-score of

Answer 1

The z-score of the price of a gallon of milk at Publix can be calculated using the formula z = (x - µ) / σ, where x is the value, µ is the mean, and σ is the standard deviation.

Step-by-step explanation:

The subject of this question is Mathematics, specifically statistics. The question is asking about the z-score of the price of a gallon of milk at Publix, given the mean and standard deviation of prices at various stores.

To find the z-score, we can use the formula: z = (x - μ) / σ, where x represents the value, μ represents the mean, and σ represents the standard deviation.

Given that the z-score at Walmart is -1.3, we can use the same formula to find the z-score at Publix by setting up the equation as follows: (-1.3) = (x - 2.89) / 0.2. Solving for x, we find that the price of a gallon of milk at Publix has a z-score of -1.3.