Question

Lengths of pregnancies of human are normally distributed with a mean of 265 and a standard deviation of 10 days .use the empirical rule t determine the percentage of women whose pregnancies are between 255 and 275 das

Answer 1

Approximately 68% of women's pregnancies are between 255 and 275 days.

Step-by-step explanation:

The lengths of pregnancies of humans are normally distributed with a mean of 265 days and a standard deviation of 10 days. To determine the percentage of women whose pregnancies are between 255 and 275 days, we can use the empirical rule. According to the empirical rule, approximately 68% of the data falls within one standard deviation of the mean, 95% falls within two standard deviations of the mean, and 99.7% falls within three standard deviations of the mean.

In this case, the range of interest is between 255 and 275 days, which is within one standard deviation of the mean. So, we can say that approximately 68% of women's pregnancies are between 255 and 275 days.