Question

Shortly after the introduction of a new​ coin, newspapers published articles claiming the coin is biased. The stories were based on reports that someone had spun the coin

150150

times and gotten

8181

headsminus−​that's

5454​%

heads.

a right parenthesis font size decreased by 1 a)	Use the Normal model to approximate the Binomial to determine the probability of spinning a fair coin 150150 times and getting at least 8181 heads.
b right parenthesis font size decreased by 1 b)	Do you think this is evidence that spinning this new coin is​ unfair? Would you be willing to use it at the beginning of a sports​ event? Explain.

a right parenthesis font size decreased by 1 a)	The probability of spinning at least 8181 heads is nothing.
	​(Round to four decimal places as​ needed.)

b right parenthesis font size decreased by 1 b)

Do you think this is evidence that spinning this new coin is​ unfair? Would you be willing to use it at the beginning of a sports​ event? Explain.

A.The probability is

fairly highfairly high​,

so it is likely that

the coin is fairthe coin is fair.

It would probably

bebe

alright for a sporting​ event, but it would be good to see more trials to be sure.

B.The probability is

fairly highfairly high​,

so

the coin is fairthe coin is fair.

It would definitely

bebe

alright for a sporting event.

C.The probability is

fairly lowfairly low​,

so

the coin is biasedthe coin is biased.

It would definitely

not benot be

alright for a sporting event.

D.The probability is

fairly lowfairly low​,

so it is likely that

the coin is biasedthe coin is biased.

It would probably

not benot be

alright for a sporting​ event, but it would be good to see more trials to be sure.

Answer 1

Answer: ---- Date: ----19/03/2019