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Lab Competency 4
University of California - Los Angeles : UCLA
Uploaded: 6 days ago
Contributor: keimitch
Category: Statistics and Probability
Type: Other
Tags: UCLA
Rating: N/A
Filename:   LAB 4 COMPETENCY.docx (7.14 kB)
Page Count: 1
Credit Cost: 1
Views: 3
Last Download: N/A
Description
Competency #4
Transcript
II. Competency Assessment C6. Describe basic concepts of random variation and commonly used statistical probability distributions. To successfully complete this competency, complete the analysis write-up for Laboratory 4's computer exercise (listed on Page 1 above) and answer the following question: If we assume that male and female births are equally likely: a. In a family of three children, what is the probability of 2 boys and 1 girl? P (2 boys, 1 girl) = P(BBG) + P(BGB) + P(GBB) = ½ ½ ½ ½ ½ ½ ½ ½ ½ = ⅜ (37.5%) b. In a family of four children, what is the probability of 2 boys and 2 girls? P (2 boys, 2 girls) = P(BBGG) + P(BGGB) + P(GGBB) + P(GBBG) + P(GBGB) + P(BGBG) = ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ + ½ ½ ½ = 6/8 (75%)
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