Acollege-entrance exam is designed so that scores are normally distributed with a mean of 500 and a standard deviation of 100. using the eight-part symmetry of the area under a normal curve, what is the probability that a randomly chosen exam score is above 600? the probability is__

The probability is  0.16

Step-by-step explanation:

We know that the average is:

The standard deviation is:

The Z-score is:

We seek to find

The Z-score is:

The score of Z = 1 means that 600 is 1 standard deviations from the mean. Then by the rule of the 8 parts of the normal curve, the area that satisfies the conficion of 1 deviations from the mean has percentage of 13.5% + 2.35% + 0.15%

So

add the table and i will answer correctly

step-by-step explanation:

is there any photos or whatever?