Question 4 (10 points) Assume that the probability a child is a boy is 0.55 and that genders of children born into a family are independent. Determine the following probabilities: a) The probability that a family with 3 children has 1 boy and 2 girls. b) The probability that a family with 3 children has 2 boys and 1 girl given that their first child is a boy. c) The probability that a family with five children has 4 boys and 1 girl.

What is the correlation coefficient between the variables? round to three decimal places. enter your answer in the box

Given the system of equations presented here: 2x + 4y = 14 4x + y = 20 which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated? multiply the second equation by â’4 to get â’16x â’ 4y = â’80 multiply the second equation by â’1 to get â’4x â’ y = â’20 multiply the first equation by 2 to get 4x + 8y = 28 multiply the first equation by â’1 to get â’2x â’ 4y = â’14

If a flying disk is 139 meters in the air and travels at an average of 13 m/s how long is it in the air