A counselor claims that 20% of all students who take SAT score at least 1200, 25

Question

A counselor claims that 20% of all students who take SAT score at least 1200, 25% score between 1000 and 1190, and the remaining 55% score below 1000. A sample of 120 students showed that 20 students had the score of 1200, 35 had a score between 1000 and 1190, while the remaining 65 students scored below 1000. Test the counselor’s claim at 0.05 level of significance, using p-value of 50%.

A. Counselor’s claim is valid.

B. Counselor’s claim is not valid.

C. We cannot answer the question with the available information.

A. Counselor’s claim is valid.

B. Counselor’s claim is not valid.

C. We cannot answer the question with the available information.

Explanation / Answer

A. Counselor’s claim is valid.

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