8. Suppose you tossed a coin 100 times and got 77 heads and 23 tails. Does...

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Answer 1

Answer #1

here mean number of heads =np=100*0.5=50

and std deviation =(np(1-p))^1/2 =(100*0.5*(1-0.5))^1/2 =5

as 77 falls more than 3 standrd deviaiton from mean ; it is a highly unusual number of heads considering coin is fair.

therefore we can infer that coin is biased towards head,

Answer 2

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