The scores of the students on a standardized test are normally distributed, with a mean of 500 and a standard deviation of 110.
What is the probability that a randomly selected student has a score between 350 and 550
1 answer:
Answer:
The probability that a randomly selected student has a score between 350 and 550 = 0.5867
Step-by-step explanation:
Mean
= 500
Standard deviation
= 110
Let X be the score of student in a standardized test
The probability that a randomly selected student has a score between 350 and 550 =
= 
=
Putting 
= 
= 0.6736 - .0869 ( Using Z table )
= 0.5867
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