I'm posting corrections from yesterday in addition to new ones. Still not sure how to answer #4.
2. Edwin rolls a number cube and then spins a color from a color card (red, yellow, blue, green, white). What is the probability that he will roll an even number and choose a red color?
Ans: P(even)*P(red)
= (1/2)*(1/5)
= 1/10 = 10%
3. A bag contains 5 blue marbles and 3 green marbles. What is the probability of drawing a blue marble followed by a green marble, with replacing the first marble before drawing the second marble?
Ans: P(blue)*P(green)
= (5/8)*(3/8)
= 15/64
= 23%
4. Edwin tossed a number cube several times. He got number '3' on 4 of the tosses. Based on theoretical probabilities, what is the best estimate of the total number of times he tossed the cube?
Ans: 3/(1/6) = 18 tosses?
new questions:
13. Make a list to show all of the possible outcomes when rolling a number cube and spinning a spinner with 4 sections red, yellow, green, blue.
Ans: 24 possible outcomes
#1 - red #2 - red #3 - red
#1 - yellow #2 - yellow #3 - yellow
#1 - green #2 - green #3 - green
#1 - blue #2 - blue #3 - blue
#4 - red #5 - red #6 - red
#4 - yellow #5 - yellow #6 - yellow
#4 - green #5 - green #6 - green
#4 - blue #5 - blue #6 - blue
15. Explain how you could simulate randomnly choosing an odd number from 1-6.
Ans: not sure understand 'simulate'. Does this mean randomly picking a number from a hat?
2 answers
2 answers