Conduct a Full Hypothesis Test and Determine If the Given

question 32

Multiple Choice

Conduct a full hypothesis test and determine if the given claim is supported or not supported at the 0.05 significance level. Round all amounts and standard scores to two decimal places.
-In 1990, the average math SAT score for students at one school was 475. Five years later, a teacher wants to perform a hypothesis test to determine whether the average math SAT score of students at the school has changed. He picks a random sample of 40 students and obtains their the mean math SAT score, which is 472.
Test whether the claim that the mean math SAT score for all students at the school has changed from the previous mean of 475 is supported or not supported. Assume that the population standard deviation is 73.

• A)not supported
• B)supported

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Definitions:

Constant Costs

The costs that remain unchanged as the level of output or production increases or decreases.

AVC Curve

A graphical depiction of the average variable costs incurred by a firm in the short run, illustrating how costs vary with output levels.

AFC Curve

A graph representing Average Fixed Costs, which shows how fixed costs per unit of output decrease as production increases.