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Homework1key

# A a 96 14 1645 or 164 or 165 7297 or 7304

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Unformatted text preview: rve is symmetrical around 0, a* = -1.645 or 1.64 or -1.65 and b* = 1.645 or 1.64 or 1.65. Alternatively, you could determine a* from the 0.05th percentile. a = μ + a* = 96 + (14)(-1.645 or -1.64 or -1.65) = 72.97 or 73.04 or 72.90 b = μ + a* = 96 + (14)(1.645 or 1.64 or 1.65) = 119.03 or 118.96 or 119.10 so the answer is (72.97,119.03) or (73.04, 118.96) or (72.90, 119.10) 7 (2.5 pts.) 1.26 (p.32). Let x represent the number of underinflated tries on an automobile. a) Which of the following p(x) functions species a legitimate distribution for x, and why are the other two not legitimate? i) x p(x) 0 0.3 1 0.2 2 0.1 3 0.05 4 0.05 1) all of the values are greater than or equal to 0 2) 0.3 + 0.2 + 0.1 + 0.05 + 0.05 = 0.7 ≠ 1 This is NOT a legitimate mass function ii) x p(x) 0 0.4 1 0.1 2 0.1 3 0.1 4 0.3 1) all of the values are greater than or equal to 0 2) 0.4 + 0.1 + 0.1 +...
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