The incubation time for a breed of chicks is normally distributed with a mean of 38 days and standard deviation of approximately 1 day. 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.) a) in 36 to 40 days b) in 37 to 39 days c) in 38 days or fewer

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The incubation time for a breed of chicks is normally distributed with a mean of 38 days and standard deviation of approximately 1 day. 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.)

a) in 36 to 40 days

b) in 37 to 39 days

c) in 38 days or fewer

Area Under a Normal Curve
2.35%
13.5%
34%
34%
13.5%
2.35%
u - 30 u- 20
u + 20 u + 3ơ
68%
95%
99.7%
Transcribed Image Text:Area Under a Normal Curve 2.35% 13.5% 34% 34% 13.5% 2.35% u - 30 u- 20 u + 20 u + 3ơ 68% 95% 99.7%
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