The incubation time for a breed of chicks is normally distributed with a mean of 33 days and standard deviation of approximately 2 days. Look at the figure below and answer the following questions. If 10,000 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 2.35% 13.5% 34% 34% 13.5% 2.35% H-30-20 014 P+O +20 +30 68% 95% 99.7% (a) in 29 to 37 days (b) in 31 to 35 days (c) in 33 days or fewer (d) in 27 to 39 days

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