A group of 200 students takes the Kaplan course in hopes that it will improve their SAT scores above the national mean of 500 on the math section.The population standard deviation of the SAT is known to be 100.Use an alpha level of .05 when answering the following questions.What is the alternative hypothesis? A)H₁: ì 500 B)H₁: ì 500 D)H₁: ì = 500

Question

A group of 200 students takes the Kaplan course in hopes that it will improve their SAT scores above the national mean of 500 on the math section.The population standard deviation of the SAT is known to be 100.Use an alpha level of .05 when answering the following questions.What is the alternative hypothesis? A)H₁: ì 500 B)H₁: ì < 500 C)H₁: ì > 500 D)H₁: ì = 500

Quizplus · Accepted Answer

The alternative hypothesis should state the direction of the difference from the null hypothesis. In this case, the null hypothesis is that the mean SAT score of the students who take the Kaplan course is not significantly different from the national mean of 500. The alternative hypothesis, therefore, should state that the mean SAT score of the students who take the Kaplan course is significantly higher than 500. Choice C is the correct option as it states that the mean SAT score is greater than 500.

A Group of 200 Students Takes the Kaplan Course in Hopes