Research Done in the Mid 1980s Indicated That 80% of Grizzly

Multiple Choice

Research done in the mid 1980s indicated that 80% of grizzly bears in the greater ecosystem of Yellowstone National Park entered their den for hibernation by the last day of November. This has come into question as of late. Researchers have hypothesized that climate change has postponed bears entering hibernation until later in the season; that is, researchers believe that a smaller percentage of bears are entering their den for hibernation by the last day of November. Sixty-two Yellowstone grizzly bears were tracked via radio monitors, which allow scientists to pinpoint when the bears enter their dens with a high degree of accuracy. Of the sixty-two Yellowstone grizzly bears being tracked, forty-two entered their den for hibernation by the last day of November.
-How could we use coins, a spinner, or cards to simulate one of the samples in the above simulation? Select all that apply.

A) Flip a coin 62 times, where heads represents "hibernate by November 30." Count the number of heads in 62 flips.
B) Create a spinner with 80% shaded to represent "hibernate by November 30." Spin the spinner 62 times and count the number of times the spinner lands in the shaded area.
C) Have 8 black cards and 2 red cards where black represents "hibernate by November 30". Draw with replacement from the cards 62 times and count the number of times a black card is drawn.
D) Create a spinner with 68% shaded to represent "hibernate by November 30." Spin the spinner 62 times and count the number of times the spinner lands in the shaded area.