Suppose that an IRS examiner correctly detects and flags 90% of all erroneous returns that he reviews. In addition, he mistakenly flags 2% of correct returns that he reviews. Suppose that about 20% of the tax returns he reviews contain errors. (a) What proportion of tax returns he reviews are flagged? (b) What proportion of tax returns he flagged actually contain errors?

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A: The following data has been given: 18,16,16,16,14,18,16,18,14,19 The sample size is n=10.

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A:

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A: From the provided information, The hypotheses can be constructed as: H0: p = 0.64 H1: p < 0.64…

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A: Hypothesis: Hypothesis is an assumption about the parameter of the population which will be made on…

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A: Empirical rule: According to the empirical rule, approximately 68% of the data fall within one…

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A: Note- As per our policy we can answer only the first 3 sub-parts of a question. If you want…

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A: Empirical rule: According to empirical rule, approximately 68% of the data fall within one standard…

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A: given data  n = 457 x = 48 claim = p ≠ 0.15

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A: Given information

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A: The sample mean is calculated as follows: x=∑xn  =18+16+16+16+14+18+16+18+14+1910  =16.5

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A: Given : x= 33  n =72 p= 0.51

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A:

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A:

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A:

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A:

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A: The test statistic for this sample is, Thus, the test statistic is 1.022.

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A: Given data: 18, 16, 16, 16, 14, 18, 16, 18, 14, 19 The objective is to count the number of…

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A:

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A: X~Poisson distribution. Mean=29

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A: Empirical rule: According to empirical rule, approximately 68% of the data fall within one standard…

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A: Consider that p is the true population proportion of stocks that went up.

Q: What is the test statistic for this sample? (Report answer accurate to three decimal places.) test…

A: n = 80 sample proportion = 11/80 =0.1375population proportion = 0.3