Question

fast-food expenditures the average person, according to one source, spends $188 per year on fast - foods. if the standard deviation is $12, find the corresponding z score for each raw score. round z scores to at least two decimal places.
part 1 of 3
the z score corresponding to $168 is - 1.67.
part 2 of 3
the z score corresponding to $210 is 1.83.
part 3 of 3
the z score corresponding to $179 is

Explanation:

Step1: Recall the z - score formula

The z - score formula is \( z=\frac{x-\mu}{\sigma} \), where \( x \) is the raw score, \( \mu \) is the mean, and \( \sigma \) is the standard deviation.

Step2: Identify the values

Given \( \mu = 188 \), \( \sigma=12 \), and \( x = 179 \).

Step3: Substitute the values into the formula

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Answer:

• \( -0.75 \)