7) The mean and variance of a comparison distribution that would be used to test

Question

7) The mean and variance of a comparison distribution that would be used to test the hypothesis that the mean obtained in a study involving 10 participants is different from a known population having a mean of = 100 and 2 = 25 would be A) mean = 10, variance = 2.5 B) mean = 10, variance = 5 C) mean = 100, variance = 2.5 D) mean = 100, variance = 5 7) The mean and variance of a comparison distribution that would be used to test the hypothesis that the mean obtained in a study involving 10 participants is different from a known population having a mean of = 100 and 2 = 25 would be A) mean = 10, variance = 2.5 B) mean = 10, variance = 5 C) mean = 100, variance = 2.5 D) mean = 100, variance = 5 7) The mean and variance of a comparison distribution that would be used to test the hypothesis that the mean obtained in a study involving 10 participants is different from a known population having a mean of = 100 and 2 = 25 would be A) mean = 10, variance = 2.5 B) mean = 10, variance = 5 C) mean = 100, variance = 2.5 D) mean = 100, variance = 5

Explanation / Answer

given that 10 participants from different known population

mean = 100

  2 = 25

mean = 100 and we see variance = 25/10 = 2.5

so the ans is option c

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