Question: Refer to Exercise 6. a. Generate 1000 bootstrap samples from these data. Find the 2.5 and 97.5 percentiles. b. Compute a 95% bootstrap confidence interval

Refer to Exercise 6.

a. Generate 1000 bootstrap samples from these data. Find the 2.5 and 97.5 percentiles.

b. Compute a 95% bootstrap confidence interval for the mean compressive strength, using method 1 as described on page 390.

c. Compute a 95% bootstrap confidence interval for the mean compressive strength, using method 2 as described on page 390.

Refer to Exercise 6.

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

Refer to Exercise 6.a. Generate 1000 bootstrap samples from these data. Find

One thousand bootstrap samples were generated from these data, and the bootstrap sample means were arranged in order. Refer to the smallest value as Y₁, the second smallest as Y₂, and so on, with the largest being Y₁₀₀₀. Assume that Y₂₅ = 38.3818, Y₂₆ = 38.3818, Y₅₀ = 38.3909, Y₅₁ = 38.3918, Y₉₅₀ = 38.5218, Y₉₅₁ = 38.5236, Y₉₇₅ = 38.5382, and Y₉₇₆ = 38.5391.

Method 1:

the 2.5 and 97.5 percentiles.b. Compute a 95% bootstrap confidence interval for

Method 2:

the mean compressive strength, using method 1 as described on page 390.c.

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