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The SAT Scores of Students Are Normally Distributed with a Mean

question 47

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The SAT scores of students are normally distributed with a mean of 950 and a standard deviation of 200.
a.Nancy Bright's SAT score was 1390.What percentage of students have scores more than Nancy Bright?
b.What percentage of students score between 1100 and 1200?
c.What are the minimum and the maximum values of the middle 87.4% of the scores?
d.There were 165 students who scored above 1432.How many students took the SAT?


Definitions:

Insurance Expense

The cost incurred by a business or individual for purchasing insurance coverage, recognized as an expense in financial statements.

Trial Balance

A report listing all the balances in each general ledger account, ensuring debits equal credits for accuracy in accounting.

Account Balance

The amount of money present in a financial account, calculated as the total credits minus the total debits.

Posting Errors

Mistakes made during the process of transferring entries from the journal to the ledger in the accounting cycle.

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