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week6lab_answers[1] - Math 221 Week 6 Lab Part 1. Normal...

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Math 221 Week 6 Lab Part 1. Normal Distributions and Birth Weights in America 2a. 99.88% 2b. 43.83% 2c. 4.66% 2d 2.75% 3a. 37 to 39 weeks/ more than 8.73 pounds 3b. 42 weeks and over/ 9.09 pounds 4. 32 to 35 weeks/ 41.40% b. 37 to 39 weeks/ 82.61% c. 42 weeks and over/ 81.57% 5a. under 28 weeks/ 88.36% 5b. 32 to 35 weeks/ 5.03% 5c. 37 to 39 weeks/ 0.01% Part 2. Age Distribution in the United States Mean= 36.21 =AVERAGE(H8:H43) Population mean= 36.48 (calculated above) Thus the result agrees with the Central Limit theorem Central limit theorem says that mean of all the sample means = Population mean 3. The histogra m is shown below; it does not appear to be the bell shaped normal distributi on
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Relative Frequen cy 0 - 4 6.7% 5 - 9 6.8% 10 - 14 7.4% 15 - 19 7.2% 20 - 24 7.0% 25 - 29 6.2% 30 - 34 6.8% 35 - 39 7.3% 40 - 44 8.1% 45 - 49 7.6% 50 - 54 6.6% 55 - 59 5.5% 60 - 64 4.2% 65 - 69 3.4% 70 - 74 3.0% 75 - 79 2.6% 80 - 84 1.9% 85 - 89 1.0% 90 - 94 0.5% 95 - 99 0.2% 4. Answ
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week6lab_answers[1] - Math 221 Week 6 Lab Part 1. Normal...

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