Thank you 1. Assume that the duration of human pregnancies can be described by a

Question

Thank you 1. Assume that the duration of human pregnancies can be described by a Normal model wi th an 266 days and standard deviation 16 days. What percent of pregnancies should last between 270 and 280 days? Suppose a certain obstetrician is currently providing prenatal care to 60 pr What is the probability that the mean duration of these patients' pregnancies will be less than 260 days? The duration of human pregnancies may not actually follow a Normal model. Explain why it may be somewhat skewed to the left. : ) women. c. parts a. and b.i

Explanation / Answer

c) The normal duration of pregnancies is around 10 months. Whereas, in some case baby is delivered before reach the normal time due to some complexity (approximately starting from six month). So, these cases are outliers in the duration of pregnancies and give skewed to the left. Hence, duration of human pregnancies may not actually follow a normal model and skewed to the left.

d) Yes, due to the left skewed, the probability of left and right side of the mean are not equal as in the standard normal distribution.

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