question archive The incubation time for a breed of chicks is normally distributed with a mean of 21 days and standard deviation of approximately 2 days
The incubation time for a breed of chicks is normally distributed with a mean of 21 days and standard deviation of approximately 2 days
Subject:StatisticsPrice: Bought3
The incubation time for a breed of chicks is normally distributed with a mean of 21 days and standard deviation of approximately 2 days. Look at the ?gure below and answer the following questions. If 1000 eggs are being incubated, how many chicks do we expect will hatch in the following time periods? (Note: In this problem, let us agree to think of a single day or a succession of days as a continuous interval of time. Assume all eggs eventually hatch.) Area Under a Normal Curve p-Ja p-Za "-0 1!- "+0 "+20 "+30 l $3 | 959'. 99.5% (a) in 17 to 25 days X chicks H (b) in 19 to 23 days 3' chicks H (c) in 21 days or fewer 500 «I chicks H (d) in 15 to 27 days 997 y chicks H
