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(1 point) A random sample of 100 observations from a population with standard deviation 8.31 yielded a sample mean of 91.5. P 1

Entered Answer Preview Result 1.663 1.663 correct 0.0482 0.0482 incorrect A A correct At least one of the answers above is NO2

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1) a) Test statistic = = X-M 91.5-90 g/n 8.31/ 100 = 1.81 b) P-value = 2*P(Z >1.81) = 2[PO<Z <0) - P(0<Z< 1.81)] = 2[0.5 -0.4

3) 94-0 Test statistic X-M s/n = - 2.4391 228/35 P-value = 2*P(t>2.4391) = 0.0201 Conclusion: A)

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