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2. An instructor wishes to see whether the variation in scores of the 23 students in her class is
less than the variance of the population. The variance of the class is 198 . Is there enough
evidence to support the claim that the variation of the students is less than the population
variance ( 2 = 25 ) at = 0.05 ? Assume that the scores are normally distributed.

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2- An instructor wishes to see whether the variation in scores of the.pdf

  • 1. 2. An instructor wishes to see whether the variation in scores of the 23 students in her class is less than the variance of the population. The variance of the class is 198 . Is there enough evidence to support the claim that the variation of the students is less than the population variance ( 2 = 25 ) at = 0.05 ? Assume that the scores are normally distributed.