The Scores of High-School Students Sitting a Mathematics Exam Were

question 82

Short Answer

The scores of high-school students sitting a mathematics exam were normally distributed, with a mean of 86 and a standard deviation of 4.
a. What is the probability that a randomly selected student will have a score of 80 or less?
b. If there were 97 680 students with scores higher than 91, how many students took the test?

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Definitions:

Financial Statements

Official records that outline the financial activities and condition of a business, individual, or other entity.

Average Collection Period

The mean number of days a company waits to get payments from customers for products or services provided on credit.

Balance Sheet

A document showcasing a corporation's assets, obligations, and the equity held by shareholders on a specific date.

Sales On Account

Transactions where goods or services are delivered but payment is delayed, creating an account receivable on the balance sheet.