The scores of an eighth-grade math test have a normal distribution with a mean u = 83 and a standard deviation o = 5. If
1 answer:
Answer:
z=92-83/5
Step-by-step explanation:
The formula for calculating a z-score is given as:
z = (x-μ)/σ,
where
x is the raw score
μ is the population mean
σ is the population standard deviation.
Where: from the question
x is the raw score = 92
μ is the population mean = 83
σ is the population standard deviation = 5
z = 92 - 83/5
Therefore, expression would she write to find the z-score of her test score is
z = 92 - 83/5
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