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The incubation time for a breed of chicks is normally distributed with a mean of 26 days and standard deviation of approximately 1 day. Look at the figure 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 2.35% 13.5% 34% F μ-30 μ - 20 μ-σ (a) in 24 to 28 days chicks (b) in 25 to 27 days chicks (c) in 26 days or fewer chicks (d) in 23 to 29 days chicks 34% f 68% 95% 99.7% 13.5% μ+o 2.35% με 20 με 30
A medical clinic in Syracuse classifies patients' files by gender and by type of diabetes (A or B). The numbers of patients in each classification are shown below. Part 1 of 3 Gender Female Male Type of diabetes A 53 38 B 44 41 If one file is selected at random, find the following probabilities. (Round your answers to two decimal places.) P(Male) P(Type A) P(Type B female)
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