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using traditional methods, it takes 95 hours to receive a basic flying license. a new license training method using computer aided instruction (cai) has been proposed. a researcher used the technique with 90 students and observed that they had a mean of 97 hours. assume the variance is known to be 49. a level of significance of 0.02 will be used to determine if the technique performs differently than the traditional method. is there sufficient evidence to support the claim that the technique performs differently than the traditional method? what is the conclusion?

Sagot :

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