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Mathematics, 04.12.2019 01:31 kaylam5599

Arandom sample of 20 students yielded a mean of ¯x = 72 and a variance of s2 = 16 for scores on a college placement test in mathematics. assuming the scores to be normally distributed, construct a 98% confidence interval for σ2.

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Arandom sample of 20 students yielded a mean of ¯x = 72 and a variance of s2 = 16 for scores on a co...

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