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Probability

1. There is a 20% probability of rain tomorrow means that:

a. Tomorrow it will be raining during 0.2 of the day, and the rest of the day it will be clear.

b. Out of the next 5 days, one day it will be raining.

c. According to the records, if a weather like one we have today occurred in the past, then 20% of cases it was raining on the next day.

What is wrong?

2. You brought 10 lottery tickets. One of them won prize. That means probability of winning a prize is 1/10.

True or False?

3. In a lottery, the more tickets you buy, the more chance you have to win the prize(s).

True or False?

4. If you have 3 suits, 10 shirts, and 12 neckties, you can come to work each time in a different outfit during the whole year.

True or False?

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Please refer to the attachment for the solutions.

Problem: There is a 20% probability of rain tomorrow means that:
Solution:
There is a 20% probability of rain ...

Solution Summary

The solution assists with answering various probability questions regarding the weather, lottery tickets, and outfits during the year.

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