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Chapter 8.1, Problem 14P

Basic Computation: Find the Test Statistic, Corresponding P-value, and Conclude Test A random sample of size 16 from a normal distribution with σ = 3 produced a sample mean of 4.5.

  1. (a) Check Requirements Is the x ¯ distribution normal? Explain.
  2. (b) Compute the sample test statistic z under the null hypothesis H0: μ = 6.3.
  3. (c) For H1: μ < 6.3, estimate the P-value of the test statistic.
  4. (d) For a level of significance of 0.01 and the hypotheses of parts (b) and (c), do you reject or fail to reject the null hypothesis? Explain.
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Chapter 8 Solutions

Bundle: Understandable Statistics, Loose-leaf Version, 12th + WebAssign Printed Access Card for Brase/Brase's Understandable Statistics: Concepts and Methods, 12th Edition, Single-Term

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