An instructor wishes to see whether the variation in scores ofthe 24 students in

Question

An instructor wishes to see whether the variation in scores ofthe 24 students in her class is less than the variance of thepopulation. The variance of the class is 153. Is there enoughevidence to support the claim that the variation of the students isless than the population variance (2=240) ata=0.05? Assume that the scores are normallydistributed. Yes or No? An instructor wishes to see whether the variation in scores ofthe 24 students in her class is less than the variance of thepopulation. The variance of the class is 153. Is there enoughevidence to support the claim that the variation of the students isless than the population variance (2=240) ata=0.05? Assume that the scores are normallydistributed. Yes or No?

Explanation / Answer

No. because the mean scores should also have been given. hence there is not enough evidence to claim that the variation of the students is less than the population variance

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