A statistician has correctly predicted every earthquake in California for the past 30 years.  Each day, she predicts an earthquake.  That way, whenever there's an earthquake, she correctly predicts it.  

What, if anything, is wrong with the statistician's strategy?

Group of answer choices

The statistician will incorrectly predict every day with no earthquake

Earthquakes are not important

There is nothing wrong with this strategy

Since earthquakes are unlikely, the statistician should predict NO earthquake every day

12. DISCUSSION - Will you ever win?

You have a 10% chance of winning a certain bet.  You keep playing until you win.  What is the chance that you never win?  Explain your reasoning.

Group of answer choices

No answer text provided.

Chance = 0 (Chance you will lose the first n bets gets smaller and smaller as n gets large)

not enough information to decide

Chance = .1 since that is your chance on every bet

13. DISCUSSION - Coin tossing

If you toss a coin 1,000 times the average (mean) number of heads equals 500, yet the probability that you will get exactly 500 heads in 1,000 tosses is about .02.  Why is this?

Group of answer choices

It's very difficult to toss a coin 1,000 times, so the results will vary

The law of averages states that the long-run fraction of heads will be "close to" .5, whereas the actual number of heads will vary somewhat around the mean

No answer text provided.

Someone is cheating

14. DISCUSSION - Law of Averages

Does the law of averages mean there's no such thing as luck? 

Group of answer choices

The law of averages doesn't exist.

Need more data to decide.

Luck means that someone does better or worse than average just due to chance. The law of averages refers to what happens in the long run, when luck is no longer meaningful

There's no such thing as luck.

15. DISCUSSION - Why is everyone in Copenhagen healthy?

A tourist visiting Copenhagen who was walking around town noticed that everyone looked healthy.  Not a sick person to be seen.  How could this be true?

Group of answer choices

There are no sick people in Copenhagen

No answer text provided.

Everyone gets vaccinations.

Good health care system. Sick people are in the hospital or at home and can't be seen.

Answer rating: 100% (QA)

11 Ans It is provided that whenever earthquake happened her Prediction is tru But whenever earthqua... View the full answer