Mrs. Jones has two fair coins. She tosses one coin 100 times and the other coin 150 times. She wishes to compare the difference in the percentage of heads. The following table presents the results of this survey: Coin 1 Coin 2 Expected 0.05 0.07 proportions of heads Sample size 100 200 Resulting 0.056 0.068 proportions of heads Test at 5% level of significant coin 1 and coin 2 difference in the percentage of heads