The lengths of human pregnancies are approximately normally distributed, with mean 256 days and standard deviation 5.76 days. A. What proportion of pregnancies lasts more than 270 days? B. What proportion of pregnancies lasts less than 250 days? C. What proportion of pregnancies lasts between 240 and 280 days?

This C The weight of an organ in adult males has a bell-shaped distribution with a mean of 310 grams and a standard deviation of 40 grams. Use the empirical rule to determine the folowing (a) About 99.7% of organs will be between what weights? (b) What percentage of organs weighs between 230 grams and 390 grams? (c) What percentage of organs weighs less than 230 grams or more than 390 grams? (d) What percentage of organs weighs between 270 grams and 430 grams? (a) and grams (Use ascending order.) (b)% (Type an integer or a decimal.) (c) % (Type an integer or a decimal.) (d) % (Type an integer or decimal rounded to two decimal places as needed.) Enter your answer in each of the answer boxes. e Type here to search 近

Find the area of the shaded region. The graph depicts the standard normal distribution of bone density scores with mean 0 and standard deviation 1. The area of the shaded region is

Find the area of the shaded region under the standard normal curve. A - 1.21 1.06

Please help

Please indicate where the graph need to be