Homework: Section 4.2
icore: 0 of 1 pt
3 of 6 (2 complete)
HW Score: 16.67%, 1 of
1.2.13
Question Help
A student at a junior college conducted a survey of 20 randomly selected full-time students to determine the relation between the number of hours of video game
playing each week, x, and grade point average, y. She found that a linear relation exists between the two variables. The least squares regression line that describes
this relation is ý = -0.0546x +2.9332
(a) Predict the grade-point average of a student who plays video games 8 hours per week.
The predicted grade-point average is:
(Round to the nearest hundredth as needed.)

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.