Question

Gareth believes that if he flips a coin 820 times, it will land heads up exactly 410 times. What would you tell Gareth about his prediction?

Answer 1

I can help

Answer 2

ok

Answer 3

his prediction would be wrong and what r the answer choices

Answer 4

its an essay question

Answer 5

Gareth's prediction would be wrong because there is a equal probability of the coin landing heads up every single time, or landing tails up every single time

Answer 6

Medal if this helped ;)....let me know if you need further explanation

Answer 7

@Smartanne
that is not the reason WHY he is wrong

Answer 8

ok....

Answer 9

than what is

Answer 10

well - there is an equal chance of h/t each throw

that means that there is just a chance that (for instance) he will throw 820 heads

(this is an infinitesimally small chance - but it still exists)

The distribution of probability is bigger as you get to 420 heads, but ANY combination of 820 heads or tails has a finite possibility, therefore he cannot be confident that exactly 410 heads will occur

Answer 11

thxs

Answer 12

I have just looked up the probability

it is only about 2.8% chance that exactly 410 heads will be thrown !!