Hello please help on number 3
1 answer:
You might be interested in
Answer:
C. Z690 is between 2 and 3 standard deviations of the mean
Step-by-step explanation:
A z-score tells us how many standard deviations away from the mean a value is.
Given that the mean of the credit score is
μ = 690
And the standard deviation is
σ = 14
Then, the z score is calculated using
z = (x - μ) / σ
Since it is not away from the mean, it is within 1 standard deviation above or below the mean.
Then, since 1 standard deviation is between -2 and -3
Then, the Z690 is between 2 and 3 standard deviations of the mean
