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Problem on residential and commercial retaining walls

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Reference no: EM131752791

Question: Manufacturing and Product Development The Liberty Stone Vista standard unit is manufactured to weigh 70 pounds.77 This double-sided stone is part of a wall system for residential and commercial retaining walls. Large variability in the weight of these stones could cause structural deficiencies in a wall. A random sample of 17 standard units was obtained and the sample variance was 7.75 pounds2.

a. Is there any evidence to suggest that the population variance is greater than 4 pounds2? Assume normality and use a = 0.05.

b. Find bounds on the p value for this hypothesis test.

Reference no: EM131752791

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