Becky’s statistics teacher was teaching the class how to perform the z-test for a proportion. Becky was bored because she had already master

Question

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?

in progress 0
Khánh Gia 3 months 2021-08-17T02:19:52+00:00 1 Answers 10 views 0

Answers ( )

    0
    2021-08-17T02:21:40+00:00

    Answer:

    H0 : p = 0.5

    H1 : p ≠ 0.5

    Two tailed test

    Step-by-step explanation:

    The test if the true proportion of heads is different from 50%; this means the initial truth, that is the true proportion is 50% ; which is the null ;

    H0 : p = 0.5

    The researcher intends to test if the true proportion is not 50% ; that is the researcher is n spwcudfic about if the proportion is lower or higher, he just wants to test that the proportion is different, hence the test could go either way ;

    Alternative hypothesis ;

    H1 : p ≠ 0.5

    Since the sign in the alternative hypothesis could be in either direction, then we have a two tailed test

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )