3 Let us try using the following bivariate function to describe the presence of sneeze particles from a person's mouth distance units are in feet 1 f x y xye xy x 0 0 y 5 a Find the value of k so that f is a probability density function b Mindful of social distancing compute the proportion of sneeze particles that exceed x 6 feet in horizontal distance c Compute Var Y

What is the measure of x, in degrees

Write an equation of the line given the two points below (write your equation in slope-intercept form, y=mx+b): (-4, 4) and (6, -4)

Martha has a deck of cards. she has lost some of the cards, and now the deck only contains nine spades, eleven diamonds, eight clubs, and twelve hearts. martha predicts that whenever she draws a card from the deck without looking, she will draw a club one-fifth of the time. which activity would best allow martha to test her prediction? a. randomly draw a card from the box and see if it is a club. b. randomly draw a card. then, continue to draw another card until all eight clubs are drawn. c. randomly draw and replace a card 120 times. then, observe how close to 30 times a club is drawn. d. randomly draw and replace a card 100 times. then, observe how close to 20 times a club is drawn.