Members of a basketball team suspect the coin used for the coin toss at the beginning of their games is unfair. They believe it
turns up heads more often than it should if it were fair. The coach of the team decides to flip the coin 100 times and count the number of heads. Her trial results in 42 heads. She decides to carry out a significance test. What is the p-value she obtains and the general conclusion that can be made at a 90% significance level?
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Answer
Subtract from
then;
Remove the bracket we have;
Like terms are those terms which have same variable to the same power.
Combine like terms;
Therefore, Subtracting from
we get