Question

Tim has two spinners , spinnerA and spinner B. Each spinner can only land on red or blue . The probability that spinner A will land on red is 0.5. The probability that spinnerB will land on red is 0.6. Tim spins spinner A once and he spins spinnerB once. He does this a number of times . The number of times both spinners land on red is 84. Workout an estimate for the no of time both spinners land on blue.

Answer 1

Answer:

• 56

Step-by-step explanation:

Spinner A

• Probability of red = 0.5,
• Probability of blue = 0.5

Spinner B

• Probability of red = 0.6,
• Probability of blue = 0.4

Probability of both A and B land on red:

• 0.5*0.6= 0.3

Number of attempts to get outcome of 84 red on both spinners is:

• 84/0.3= 280

Probability of both spinners land on blue:

• 0.5*0.4= 0.2

Estimated number of both spinners land on blue:

• 280*0.2= 56