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Assume that the duration of human pregnancies can be described by a Normal model with...

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Assume that the duration of human pregnancies can be described by a Normal model with mean 268 days and standard deviation 17 days a What percentage of pregnancies should last between 274 and 285 days b At least how many days should the longest 30 of all pregnancies last c Suppose a certain obstetrician is currently providing prenatal care to 52 pregnant patients Let y represent the mean length of their pregnancies According to the Central Limit Theorem what is them distribution of this sample mean y Specify the model mean and standard deviation d What s the probability that the mean duration of these patients pregnancies will be less than 263 days a The percentage of pregnancies that should last between 274 and 285 days is Round to tun doni

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