A 95% prediction interval for SALARY when GMAT = 600 is approximately ($37, 915,

Question

A 95% prediction interval for SALARY when GMAT = 600 is approximately ($37, 915, $51, 984). Interpret this interval. A) We are 95% confident that the mean SALARY of all top business school graduates with GMATs of 600 will fall between $37, 915 and $51, 984. B) We are 95% confident that the SALARY of a top business school graduate with a GMAT of 600 will fall between $37, 915 and $51, 984. C) We are 95% confident that the increase in SALARY for a 600-point increase in GMAT will fall between $37, 915 and $51, 984. D) We are 95% confident that the SALARY of a top business school graduate will fall between $37, 915 and $51, 984.

Explanation / Answer

here option A is correct as we above interval gives confidence about mean not about an individual.

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