You tossed a coin 50 times and got 21 heads. The proportion of heads is p = 21/5

Question

You tossed a coin 50 times and got 21 heads. The proportion of heads is p = 21/50 = 0.42. The proportion is less than 0.5. You want to find out if this is the evidence that your coin is not balanced. Formulate the null and alternative hypotheses to test if the coin is not balanced. Null hypothesis: The coin is not balanced (p notequalto 0.5). Alternative hypothesis: The coin is balanced (p notequalto 0.5). Null hypothesis: The coin is balanced (p = 0.5). Alternative hypothesis: The coin is not balanced (p notequalto 0.5). Null hypothesis: the coin is balanced (p = 0.5) Alternative hypothesis: The coin is not balanced (p

Explanation / Answer

Null hypotheis:

H0: P=0.5

Alternative hypotheis:

H1: P<0.5

Step2:

Normal distribution with
mean=np = 50*0.42 =21

standard deviation =sqrt(npq) =3.49

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