Answer: the Z-score test result of 1800 points is 1.33
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 find the Z-score test result of 1800 points
For x = 1800,
z = (1800 - 1700)/75 = 100/75 = 1.33
