A college-entrance exam is designed so that scores are normally distributed with a mean of 500 and a standard deviation of 100. You scored a 625. Calculate your z-score to the nearest hundredth (i. e. 2 decimal places). z=

The required z-score = 1.25

Step-by-step explanation:

Let x be a random variable that denotes the scores in the exam.

The formula for z-score =

As per given, we have

X= 625, mean=500, standard deviation = 100

Z-score =

i.e. Z-score =

i.e. Z-score =1.25

Hence, the required z-score = 1.25

step-by-step explanation:

i have done this all on a piece of paper but idk how to put it on here cuz it needs to be drawn