The compressive strength, in kilopascals, was measured for concrete blocks from five different batches of concrete, both
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Can you conclude that the mean strength after six days is greater than the mean strength after three days?
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Batch 2 4 After 3 days 34 1316 1352 355 1327 After 6 days 1376 1373 1366 1384 1358
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The differences are 3557142931 D 332 s D 15498 n 5 There are 51 4 degrees of freedom The ...View the full answer
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