If 60 new entrants in a university have a mean height of 68.60 inches and 50 seniors a mean height of 69.51 inches, is the evidence conclusive that the mean height of seniors is greater than that of the new entrants, if the standar deviation of the height of university students is 2.48 inches. Test the hypothesis
at 5% level of significance.
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poisonous gas. But, Sodium chloride (Common salt), the compound formed from these elements is an essential ingredient in our food.
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If 60 new entrants in a university have a mean height of 68.60 inches and 50 seniors a mean height of 69.51 inches, is the evidence conclusive that the mean height of seniors is greater than that of the new entrants, if the standar deviation of the height of university students is 2.48 inches. Test the hypothesis
at 5% level of significance
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