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?
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I can help
his prediction would be wrong and what r the answer choices
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its an essay question
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
Medal if this helped ;)....let me know if you need further explanation
that is not the reason WHY he is wrong
than what is
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
I have just looked up the probability
it is only about 2.8% chance that exactly 410 heads will be thrown !!