In the Past, of All the Students Enrolled in Basic

question 12

Short Answer

In the past, of all the students enrolled in Basic Business Statistics, 10 percent earned an A, 20 percent earned a B, 30 percent earned a C, 20 percent earned a D, and the remainder failed the course. Dr. Johnson is a new professor teaching Basic Business Statistics for the first time this semester. At the conclusion of the semester, of his 60 students, 10 had earned an A, 20 a B, 20 a C, 5 a D, and 5 received an F. Assume that the class constitutes a random sample. Dr. Johnson wants to know if there is sufficient evidence to conclude that the grade distribution of his class is different from the historical grade distribution. Calculate the expected values for a B and for a C.

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Definitions:

Cash Transactions

Financial transactions involving the immediate payment of cash for the purchase of goods or services.

Pretax Income

Pretax Income is the total income a company earns before any taxes are deducted, highlighting its profitability from operations and non-operating activities.

Independent Situation

A scenario or condition that is not influenced by other variables, often used in determining the effect of specific factors in an analysis.

Income Tax

Taxes imposed by the government on the income generated by individuals and businesses within their jurisdiction.