Reference no: EM132363743

Becky's statistics teacher was teaching the class how to perform the z -test for a proportion. Becky was bored because she had already mastered the test, so she decided to see if the coin she had in her pocket would come up heads or tails in a truly random fashion when flipped. She discretely flipped the coin 30 times and got heads 18 times. Becky conducts a one-proportion hypothesis test at the 5% significance level, to test whether the true proportion of heads is different from 50%

Which answer choice shows the correct null and alternative hypotheses for this test? Select the correct answer below:

• H0:p=0.6; Ha:p>0.6, which is a right-tailed test.
• H0:p=0.5; Ha:p<0.5, which is a left-tailed test.
• H0:p=0.6; Ha:p≠0.6, which is a two-tailed test.
• H0:p=0.5; Ha:p≠0.5, which is a two-tailed test.