Janice tosses a quarter 10 times and finds that 4 of the 10 times the quarter comes up heads and 6 of the 10 times the quarter comes up tails.What should Janice conclude?
A) The quarter is an unfair quarter.
B) The expected relative frequency probability of getting heads when tossing a quarter is 4/10.
C) It is more probable to get heads than it is to get tails when tossing a quarter.
D) In the long-term the expected relative frequency would be 5/5, but with only 10 trials a different pattern has emerged.

Question

Quizplus · Accepted Answer

In the long-term, the expected probability of getting heads or tails with a fair coin is 50% each (5/10), but with only 10 trials, the observed frequency can differ from the expected probability.

Janice Tosses a Quarter 10 Times and Finds That 4