Consider the following data and corresponding weights. a. Compute the weighted mean (to 3 decimals), Zi...

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Consider the following data and corresponding weights. a. Compute the weighted mean (to 3 decimals), Zi 3.4 2.0 1.5 3.0 Iron Key Weight (w.) 7 4 2 9 Question Check My Work (2 rem. b. Compute the sample mean of the four data values without weighting (to 3 decimals). Note the difference in the results provided by the two computations Check My Work (2 remaining) Consider the following data and corresponding weights. a. Compute the weighted mean (to 3 decimals), Zi 3.4 2.0 1.5 3.0 Iron Key Weight (w.) 7 4 2 9 Question Check My Work (2 rem. b. Compute the sample mean of the four data values without weighting (to 3 decimals). Note the difference in the results provided by the two computations Check My Work (2 remaining)