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QUESTION
The standard procedure for warming new-born infants is to place them under a heating light.With this approach approximately 85% of babies warm up to 98 degrees F within an hour.Nurses teaching at Simmons but practicing at Beth Israel Deaconess Medical Center feel that itwould be equally effective (and far more pleasant for mother and child) to warm the child on themother’s chest. They want to test whether the fraction of babies who have this skin-to—skinwarming who warm to 98 degrees F within an hour will differ from 0.85. They will try this newprocedure on 150 babies. Suppose that the proportion of these 150 babies that are warmed to 98degrees F within an hour is only 0.82. In this case you can verify that the p-Value for the two-sided test is 0.3030. Which of the following is the most appropriate conclusion? Select one: I”) a. We can reject H0 at the 5% level of significance. The data suggest that the long-runfraction of babies who have this skin-to-skin warming who warm to 98 degrees F within anhour, is less than 0.85 f“; b. We cannot reject H0 at the 5% level of significance. The data suggest that the long-runfraction of babies who have this skin-to-skin warming who warm to 98 degrees F within anhour, is not significantly less than 0.85 C“. c. We cannot reject H0 at the 5% level of significance. The data suggest that the long-runfraction of babies who have this skin-to-skin warming who warm to 98 degrees F within anhour, does not differ significantly from 0.85 f“. d. We can reject H0 at the 5% level of significance. The data suggest that the long-runfraction of babies who have this skin-to-skin warming who warm to 98 degrees F within an hourdiffers significantly from 0.85
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