A student tossed her coin 200 times, and found only 42% heads.
I know this is kinda low, but possible.
Can someone work all of this out and show me how to put it into a normal model with the SD and mean? Please explain? thanks
Are you doing hypothesis testing ? Are you familiar with the binomial distribution ?
some pointers.
Let $\displaystyle X$ be the variable that represents the number of heads. We have $\displaystyle X \sim B(200, 0.5)$
Because you're using a large amount of trails you can use the Normal approximation $\displaystyle X \simeq \ \sim N (100 , 50)$
Bobak