Probability Calculations and Statistical Analysis Guide

Extract

[...] Random Variables and Probability Distributions - Calculating Probabilities on RStudio Assignment Probabilities Question 1. It is assumed that in the culture the proportion of males is . It is also assumed that the number of individuals in the culture is sufficient for the experience to be equivalent to a draw with replacement. On selects drosophiles. It is noted the number of males obtained follows a binomial law with parameters and On cherche With I obtain Conclusion: the probability of having exactly males on drosophiles is approximately Question 2. [...]

[...] On chooses at random a baby, one notes her mass follows a normal law of parameters and a. For between and On is looking for With I obtain Conclusion: There is a proportion of approximately of babies between and b. For the 10% heaviest On is looking for With I obtain Conclusion: The of the heaviest babies weigh at least Question 10. a. See histogram below b. We are looking for the proportion of sepals with a length greater than or equal to With I obtain Conclusion: the proportion of sepals with a length greater than or equal to is approximately c. [...]

[...] On suppose that the probability of having a daughter is . On selects drosophiles. On notes the number of girls obtained follows a binomial law with parameters and On cherche With I obtain Conclusion: The probability of having at least daughters on a family of is approximately Question 7. It is a sum of random independent values following a binomial distribution with parameters and With I obtain Conclusion: On my test, on me au maximum fois « pile » Question 8. [...]