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

it would open into a square depending on the type of envelope i’m not sure about the second part

easy its decreasing

step-by-step explanation:

because its top point is at the to of the graph on the left side (atleast from the veiw i see it) now if that top point wast in the lower part of the graph it would be increasing hope this have a nice day