What effect does increasing the sample size have on the probability? provide an explanation for this result. a. increasing the sample size decreases the probability because σx increases as n increases. b. increasing the sample size increases the probability because σx increases as n increases. c. increasing the sample size decreases the probability because σx decreases as n increases. d. increasing the sample size increases the probability because σx decreases as n increases.

Hector and alex traded video games. alex gave hector one fourth of his video games in exchange for 6 video games. then he sold 3 video games and gave 2 video games to his brother. alex ended up with 16 video games. how many video games did alex have when he started?

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.

Given: circle o, cd is diameter, chord ab || cd. arc ab = 74°, find arc ca.