This test has three (multi-part) questions covering the content from Chapters 5, 7-10. There is a strong focus on Binomial probabilities, z-scores and the normal distributions, and the distribution of the sample mean. My video solutions will walk you through all of the answers from scratch with a step-by-step approach.
1c) No, her claim seems to be false. If p = 0.5, then the probability of selecting five or fewer customers who have at least one movie channel is only 0.0207.
1d) P(8 < x < 12) = 0.4966
2a) P(both have a diameter > 28 ) = 0.0045
2b) μ = 26.66
2c) P(p̂ > 0.30) = 0.9980
2d) P(x̄1 - x̄2 > 1) = 0.0096
3a) P(x=240) = 0
3b) P(250 < x < 260) = 0.025
3c) n = 27
3d) B = 7.7476
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This past test contains two very typical test questions; The first is a Chapter 7 binomial question requiring use of the binomial formula and the binomial tables. The second question combines the methods you've learned in Chapter 9 and Chapter 10. You're expected to describe the shape, center and variability of a sampling distribution of the sample mean, and then use this information to estimate a population mean. The solutions to both of these questions are available with the Term Test #2 Bundle or the Full Course Bundle.
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Here you will find my package of past term-test questions – with their full solutions – customized to cover ALL the main sections of the chapters on your upcoming term test.
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