10. A large batch of several million coins was recovered from an excavation site

Question

10. A large batch of several million coins was recovered from an excavation site. Students who participated in the operation want to test whether the coind are unbiased (i.e. equal likely to show head or tail when tossed). They conducted 2 experiemnts: Exp-1: 100 coins were randomly selected from the batch, and then each was tossed once. Exp-2: one coin was randomly selected from the batch, and then tossed 100 times. Specifically, the question they are interested is that If every coin in the batch could be tested for unbiasedness, they would be able to know whether these coins are unbiased. Select all the answers that is false a. Since each eperiement has a sample size 100, they can answer the the question equally well. Since the coins were randomly selected from the batch, they can answer the question eqally well. Both data sets contain the same information to answer any question about the unbiasedness of the coins The data from Exp-1 can answer the question better that Exp-2. b. c. d.

Explanation / Answer

Correct opton:

d. The data from Exp-1 can answer the question better than that Exp-2.

EXPLANATION:

In Expp-1 , 100 coins are tossed. So, sample size = 100. But, in Exp 2, ony one coin is tossed 100 times. So, this cannot be considered as 100 samples.

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