Mathematics, 14.04.2020 19:01 dlewis9632
[7 points] A sample of 78 anchor bolts was randomly selected and the shear strength (in kips) of each was measured, resulting in a sample mean of 4.25 and a sample standard deviation of 1.30. (a) Calculate a 98% confidence interval to estimate the true mean shear strength. [4 points] (b) Suppose that the shear strength for all bolts in the population was not normally distributed. Would the confidence interval found in part (a) still be valid
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[7 points] A sample of 78 anchor bolts was randomly selected and the shear strength (in kips) of eac...
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