Question

A bag contains 150 cubes that are black, yellow and white. A
student randomly selects a cube without looking and replaces
it in the bag. If the student selected 3 black cubes, 8 yellow
cubes and 4 white cubes, which of the options below show a
reasonable estimate for the total number of each color cube in
the bag? Select all that apply.

Answer 1

The option which shows a reasonable estimate for the total number of each colour cube in the bag is; Choice A, B, and C; 80yellow cubes, 40black and 30 black cubes.

Probability with replacement

According to the question;

• There are 150 total cubes.

• When the student selects a cube without looking and replaces it in the bag, chances are that selected 3 black cubes, 8 yellow
• cubes and 4 white cubes.

• By considering ratios; total no. of balls selected = 15.

Ultimately, the likely probability is that there are;

• 30 black cubes
• 80 yellow cubes
• 40 white cubes.

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