A magician has a coin that may or may not be fair.The results of 30 flips of the coin are H H T H T H H T H H T H H T H T H H H T T T T T H H H H H T.Since the number of heads and tails are larger than 10,the test statistic R can be assumed to follow a normal distribution.The value of the test statistic is _____.
A) -3.07
B) 14.93
C) 0.3484
D) 3.07

Question

Quizplus · Accepted Answer

The test statistic R is calculated based on the difference between the observed number of heads and tails. Given the data, the number of heads is 18 and tails is 12. The test statistic is calculated as (observed - expected) / standard deviation, which results in a value of 3.07.

A Magician Has a Coin That May or May Not