Use Table A-2 (Section 6.2) to find the probability: The mean score on an exam was 77.7 and the standard deviation was 12.1 Find the probability that a person scored above 90 on this exam.

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Q: What​ is/are the critical​ value(s)?

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Q: 2. Use the normal approximation to the binomial with n=10 and p=0.5 to find the probability P(X27)

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Q: L6Q4.If A and B are dependent events, to find the probability that the two dependent events would…

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Q: Find the sensitivity and the specificity

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Q: a) Identify the hypothesis null and alternative (Ho and Ha). b) Compute test statistic (Z).

A: Given: Population mean, μ =5Population standard deviation, σ=3Sample size, n=40Sample mean, x¯=4

Q: Calculate each Poisson probability: (a) P(X=2), A= 0.10 (Round your answer to 7 decimal places.)…

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A: Given datan=81x¯=3.59s=0.9μ=3.7

Q: The distribution of population of grade point averages at a college has 2.71 and standard deviation…

A: From the provided information, Mean (µ) = 2.71 Standard deviation (σ) = 0.4 X~N (2.71, 0.4)