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HELP ASAP FOR BRAINLIEST:
The mean score for a standardized test is 1700 points. The results are normally distributed with a standard deviation of 75 points. What is the Z-score test result of 1300 points?

Respuesta :

Answer: the z score is - 5.33

Step-by-step explanation:

Since the results for the standardized test are normally distributed, we would apply the formula for normal distribution which is expressed as

z = (x - µ)/σ

Where

x = test reults

µ = mean score

σ = standard deviation

From the information given,

µ = 1700 points

σ = 75 points

We want to the Z-score test result of 1300 points.

For x = 1300,

z = (1300 - 1700)/75 = - 400/75 =

- 5.33

Answer: 5.33

Step-by-step explanation: z = (1300-1700) / 75 = 5.33

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