Survey

Imagine a coin-toss gamble. If heads turns up, you gain $100 and if tails turns up you lose $100. Would you take part in such a gamble?

Yes

No

If you marked „No” in question nr 1, in which following gambles would you be willing to take part?

Heads you win $150, tails you lose $100

Heads you win $200, tails you lose $100

Heads you win $250, tails you lose $100

Heads you win $300, tails you lose $100

Heads you win $350, tails you lose $100

Heads you win $400, tails you lose $100

Heads you win $450, tails you lose $100

Choose between receiving the following payments and their corresponding chance (probability) of occurrence:

$4000 with a probability of 20% and $0 with a probability of 80%

$3000 with a probability of 25 % and $0 with a probability of 75%

Consider the following two-stage game. In the first stage, there is a probability of 75% to end the game without winning anything, and a probability of 25% to move into the second stage. If you reach the second stage you have a choice between:

$4000 with a probability of 80% and $0 with a probability of 20%

$3000 with certainty.

Does the highest tree in the world have more than 365 meters?

Yes

No

A certain town is served by two hospitals. In the larger hospitals about 65 babies are born each day and in the smaller about 35.About 50% of the babies are boys, however the exact percentage is varying from day to day. For a period of one year the hospitals recorded days on which such percentage was higher that 60%. Which hospital do you think recorded more such days?

Smaller hospital

Larger hospital

About the same

If a random word is taken from an English text, is it more likely that:

the word starts with a K

K is the third letter,

Which of the following languages has the biggest number of native speakers?

Spanish

Mandarin

English

Hindi

A bat and a ball cost $ 1.10 in total. The bat costs $ 1.00 more than the ball. How much does the ball cost?

$1

$0,05,

$0,10

$0,01

If it takes 5 machines 5 minutes to make 5 widgets, how long would it take 100 machines to make 100 widgets?

500 minutes

100 minutes

50 minutes

5 minutes