Data from an Izod impact test was described in Exercise 8 30 The sample standard deviation was 0 25 and n 20 specimens were tested (a) Test the hypothesis that 0 10 against an alternative specifying that 0 10, using 0 01, and draw a conclusion State any necessary assumptions about the underlying distribution of the data (b) What is the P value for this test (c) Could the question in part (a) have been answered by constructing a 99 two sided confidence interval for 2

Question: Data from an Izod impact test was described in Exercise 8-30. The sample standard deviation was 0.25 and n = 20 specimens were tested. (a)

Data from an Izod impact test was described in Exercise 8-30. The sample standard deviation was 0.25 and n = 20 specimens were tested.

(a) Test the hypothesis that σ = 0.10 against an alternative specifying that σ ≠ 0.10, using α = 0.01, and draw a conclusion. State any necessary assumptions about the underlying distribution of the data.

(b) What is the P-value for this test?

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