It is assumed that the duration of human pregnancies can be described by a Normal model with mean 266 days and standard deviation 16 days The results shown in the accompanying analysis of pregnancies were based on this Normal model The duration may not actually follow the Normal model however Complete parts a and b below Click the icon to view the pregnancy analysis results based on the Normal model OD Yes because while the Normal model can still be used the mean will potentially change Does the result in statement ii change OA Yes because the Normal model cannot be used if the correct model is very skewed OB Yes because while the Normal model can still be used the standard deviation will potentially change OC Yes because while the Normal model can still be used the mean will potentially change OD No because the Normal model can still be used according to the Central Limit Theorem even if the corre Does the result in statement iii change Pregnancy Analysis Results i Assuming the Normal model is true 21 1 of all pregnancies last between 270 and 280 days ii Assuming the Normal model is true the longest 25 of all pregnancies will last 276 8 days or more iii Assuming the Normal model is true a sample of 60 pregnant patients will have a sampling distribution with a mean of 266 days and a standard deviation of 2 07 days OA Yes because while the Normal model can still be used the mean will potentially change B No because the Normal model can still be used according to the Central Limit Theorem even if the correct model is very skewed OC Yes because while the Normal model can still be used the standard deviation will potentially change O D Yes because the Normal model cannot be used if the correct model is very skewed Print Done 1