A Company That Sells an Online Course Aimed at Helping

question 123

Multiple Choice

A company that sells an online course aimed at helping high-school students improve their SAT scores has claimed that SAT scores will improve by more than 90 points on average if students successfully complete the course. To test this, a national school counseling organization plans to select a random sample of n = 100 students who have previously taken the SAT test. These students will take the company's course and then retake the SAT test. Assuming that the population standard deviation for improvement in test scores is thought to be 30 points and the level of significance for the hypothesis test is 0.05, find the critical value in terms of improvement in SAT points, which would be needed prior to finding a beta.

• A) Reject the null if SAT improvement is > 95 points.
• B) Reject the null if SAT improvement is < 85.065 points.
• C) Reject the null if SAT improvement is > 95.88 points.
• D) Reject the null if SAT improvement is > 94.935 points.

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Definitions:

Statute of Frauds

A legal principle that requires certain types of contracts to be in writing and signed by the parties involved to be legally enforceable.

Legal Studies Lecturer

An academic professional specializing in the teaching and research of law and its various branches.

Secondary Promise

A guarantee or promise that is auxiliary or supplementary to a primary promise in a contractual agreement.

Primary Promise

A fundamental obligation in a contract that is central to the agreement's purpose.