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Strength of concrete The compressive strength in kilopascals was measured for concrete blocks from five...

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Strength of concrete The compressive strength in kilopascals was measured for concrete blocks from five different batches of concrete both three and six days after pouring The data are as follows Can you conclude that the mean strength after three days differs from the mean strength after six days Let u represent the mean strength after three days and H Use the a 0 05 level and the P value method with the TI 84 Plus calculator After 3 days After 6 days Send date to Excel Part 1 of 4 a State the null and alternate hypotheses Ho P 0 H H 0 This hypothesis test is a two tailed Y test Part 1 4 Block 1 2 3 4 1371 1379 1344 1383 1328 1337 1344 1321 Part 2 of 4 P value 0 0029 5 1386 1345 b Compute the P value Round the answer to at least four decimal places O

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