Refer to Exercise 6 in Section 5.10. Let represent the population mean compressive strength, in MPa.

Refer to Exercise 6 in Section 5.10. Let μ represent the population mean compressive strength, in MPa. Generate 1000 bootstrap samples.

a. Using the bootstrap data you generated, which of these null hypotheses can be rejected at the 5% level, using method 1 on page 390?

b. Using the bootstrap data you generated, which of these null hypotheses can be rejected at the 10% level, using method 1 on page 390?

c. If a bootstrap experiment is performed twice on the same data, is it necessary that the results will agree? Explain.

Refer to Exercise 6

In Example 5.20 (in Section 5.3) the following measurements were given for the cylindrical compressive strength (in MPa) for 11 beams:

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38.43 38.43 38.39 38.83 38.45 38.35 38.43 38.31 38.32 38.48 38.50