cations of the Normal Question 4, 7.7.341 HW Score: 18.18%, 2 of 11 points Part 1 of 2 O Points: 0 of 1 The mean incubation time of fertilized eggs is 23 days. Suppose the incubation times are approximately normally distributed with a standard deviation of 1 day. (a) Determine the 20th percentile for incubation times. (b) Determine the incubation times that make up the middle 39%. Click the icon to view a table of areas under the normal curve. (a) The 20th percentile for incubation times is |days (Round to the nearest whole number as needed.) Clear all example Get more help