Question: Assignment Score: 73.1% Resources Ly Give Up? Hint O Assignment Score: 73.1% < Question 8 of 8 Resources V Hint How heavy a load (in

Assignment Score: 73.1% Resources Ly Give Up? Hint

O Assignment Score: 73.1% < Question 8 of 8 Resources V Hint How heavy a load (in poufids) is needed to pull apart pieces of Douglas fir 4 inches long and 1.5 inches square? Suppose that the strength of pieces of wood follows a Normal distribution with standard deviation 3000 pounds. You want to estimate the mean load needed to pull apart the pieces of wood to within pounds with 95% confidence. How large a sample n is needed? Give your answer rounded up to the nearest whole number.

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