Calculating Dependent Probability

Determine whether the scenario involves independent or dependent events. Then find the probability.

• Independent; 0.25

• Dependent; 0.273

• Dependent; 0.091

• Dependent; 0.182

A coin is tossed and a number cube is rolled. Find the probability,  P(heads and 7).

• 1/14

• 1/2

• 0

• 1/7

A jar contains 4 white playing chips, 5 purple chips, and 1 black chip. Chips are selected randomly one at a time, and are put back. Find P(purple then black)

What is the probability of picking a green marble, keeping it, then picking another green marble?

A cooler contains fourteen bottles of sports drink: 7 lemon-lime flavored and 7 orange flavored. You randomly grab a bottle and give it to your friend. Then, you randomly grab a bottle for yourself. Your friend gets a lemon-lime and you get an orange.

• Independent

• Dependent

If you spin two times, what is the probability of landing on green both times?

A box contains 5 purple marbles, 3 green marbles and 2 orange marbles. Draws are made without replacement. Find P(both marbles are purple)

A coin is tossed and a number cube is rolled. Find the probability,  P(heads and 6).

A coin is tossed and then the spinner is spun. Determine the probability that you toss Heads and spin a Red.

Read through the problem and student work. What is the mistake they made while calculating?

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