The scores on an exam are normally distributed with a mean of 77 and a standard deviation of 10. What percent of the scores are greater than 87? 68%
16%
84%
2.5%
2 answers:
<span>The correct
answer between all the choices given is the second choice, which is 16%. I am
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Answer: 16%
Step-by-step explanation:
Given: The scores on an exam are normally distributed.
Mean :
Standard deviation=
Let X = 87
Then,
Now, the probability of scores are greater than 87 is given by :-
Since,
Then,
In percent ,
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1/2 = .5
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2 another correctly. I counted, but I graduated high school a long time ago. will you write me the right answer
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The answer is 78 Explanation: 65 / 5 = 13 (13 = 1/6) 13*6 = 78