20000 students took a standardized math test. The scores on the test are normally distributed, with a mean score of 85 and a sta
ndard deviation of 5. About how many students scored between 90 and 95?
1 answer:
Answer: 2718
Step-by-step explanation:
Given: Mean score = 85
Standard deviation = 5
Let x be the score of a random student that follows normal distribution.
Then, the probability that a student scored between 90 and 95 will be

The number of students scored between 90 and 95 = 0.1359 x (Total students)
= 0.1359 (20000)
= 2718
Hence, The number of students scored between 90 and 95 = 2718
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