1. odds 1. 12 balls numbered consecutively from 1 to 12 are thrown into a bag. Calculate the probability of obtaining a number less than 5 or a multiple of 5 when removing one of them. 2. Two balls are drawn from an um consisting of a white ball, a red ball, a green ball and a black ball. Write the master space when the first ball is returned to the urn before taking out the second. 3. In a population, 30% are men, of whom 20% are athletes, compared to 25% of women. A person chosen at random is an athlete. The probability that it is female is 4. A class consists of 10 men and 20 women; half of the men and half of the women have brown eyes. Find the probability that a randomly selected person is male or has brown eyes 5. In a hospital there are 100 doctors, 40 doctors are generalists and 30 are surgeons, of which 25 are generalists and surgeons at the same time, what is the probability of choosing a doctor who is a generalist or a surgeon? 6. There are 5 black balls and 10 white balls in an urn. What is the probability that if I draw two by one, both are white when a) there is replacement of the first ball b. There is no replacement of the first ball. Correlation and regression 7. We want to study the dependence of the height (m) of a certain group of individuals on their weight (Lb) Take height as the independent variable and weight as the dependent height weight variable 1.2 60 1.3 75 a. Calculate the covariance 1.3 95 b. Calculate the linear correlation coefficient c. Get the regression equation 1.5 110 d. How much should a 1.8m person weigh? 1.6 140 uerto Rico) Concentracion MacBook Pro