7.8.07

Last updated almost 4 years ago

2 questions

Note from the author:

The probability of a certain brand of battery going dead within 15 hours is 1/3. Noah has a toy that requires 4 of these batteries. He wants to estimate the probability that at least one battery will die before 15 hours are up.

Instructions

The probability of a certain brand of battery going dead within 15 hours is 1/3. Noah has a toy that requires 4 of these batteries. He wants to estimate the probability that at least one battery will die before 15 hours are up.

Required

7.8.07

Last updated almost 4 years ago

2 questions

Note from the author:

The probability of a certain brand of battery going dead within 15 hours is 1/3. Noah has a toy that requires 4 of these batteries. He wants to estimate the probability that at least one battery will die before 15 hours are up.

Instructions

The probability of a certain brand of battery going dead within 15 hours is 1/3. Noah has a toy that requires 4 of these batteries. He wants to estimate the probability that at least one battery will die before 15 hours are up.

Required

Noah will simulate the situation by putting marbles in a bag. Drawing one marble from the bag will represent the outcome of one of the batteries in the toy after 15 hours. Red marbles represent a battery that dies before 15 hours are up, and green marbles represent a battery that lasts longer.

How many marbles of each color should he put in the bag? Explain your reasoning.

Required

After doing the simulation 5 times, Noah has the following results.

What should he use as an estimate of the probability that at least one battery will die within 15 hours?

7.8.07

7.8.07

After doing the simulation 5 times, Noah has the following results. What should he use as an estimate of the probability that at least one battery will die within 15 hours?

After doing the simulation 5 times, Noah has the following results. What should he use as an estimate of the probability that at least one battery will die within 15 hours?

After doing the simulation 5 times, Noah has the following results.

What should he use as an estimate of the probability that at least one battery will die within 15 hours?

After doing the simulation 5 times, Noah has the following results.

What should he use as an estimate of the probability that at least one battery will die within 15 hours?