A study was conducted to assess the effects that occur when children are exposed to cocaine...

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A study was conducted to assess the effects that occur whenchildren are exposed to cocaine before birth. Children were testedat age 4 for object assemblyâ€‹ skill, which was described asâ€‹ \"atask requiringâ€‹ visual-spatial skills related to mathematicalâ€‹competence.\" The 196 children born to cocaine users had a mean of7.4 and a standard deviation of 2.9. The 183 children not exposedto cocaine had a mean score of 8.3 with a standard deviation of3.1. Assume that the two samples are independent simple randomsamples selected from normally distributedâ€‹ populations, and do notassume that the population standard deviations are equal. Letpopulation 1 be children born to cocaine users
Identify the null and alternative hypotheses
State the conclusion for the test.

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Given that meanx74 standard deviation sd129 numbern1196 ymean83 standard deviation sd2 31 numbern2183 null Ho u1 u2 alternate H1 u1 u2 level of significance 005 from See Answer

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