From previous studies, it is concluded that 18% of workers indicate that they are mildly satisfied with their job. A researcher claims it has increased and decides to survey 100 adults. Test the researcher's claim at the a = 0.05 significance level. Preliminary: a. Is it safe to assume that n ≤ 0.05 of all subjects in the population? No b. Verify np (1 - p) ≥ 10. Round your answer to one decimal place. np (1 - p) Yes Test the claim: a. Express the null and alternative hypotheses in symbolic form for this claim. Ho: Ha: ? 2 = = P = ? O ? b. After surveying 100 adult Americans, the researcher finds that 43 workers indicate that the are mildly satisfied with their job. Compute the test statistic. Round to two decimal places ? c. What is the p-value? Round to 4 decimals. d. Make a decision based on a = 0.05 significance level. Reject the null hypothesis. Do not reject the null hypothesis. e. What is the conclusion? There is not sufficient evidence to support the claim that 18% of workers indicate that they are mildly satisfied with their job has increased. There is sufficient evidence to support the claim that 18% of workers indicate that they are mildly satisfied with their job has increased.
From previous studies, it is concluded that 18% of workers indicate that they are mildly satisfied with their job. A researcher claims it has increased and decides to survey 100 adults. Test the researcher's claim at the a = 0.05 significance level. Preliminary: a. Is it safe to assume that n ≤ 0.05 of all subjects in the population? No b. Verify np (1 - p) ≥ 10. Round your answer to one decimal place. np (1 - p) Yes Test the claim: a. Express the null and alternative hypotheses in symbolic form for this claim. Ho: Ha: ? 2 = = P = ? O ? b. After surveying 100 adult Americans, the researcher finds that 43 workers indicate that the are mildly satisfied with their job. Compute the test statistic. Round to two decimal places ? c. What is the p-value? Round to 4 decimals. d. Make a decision based on a = 0.05 significance level. Reject the null hypothesis. Do not reject the null hypothesis. e. What is the conclusion? There is not sufficient evidence to support the claim that 18% of workers indicate that they are mildly satisfied with their job has increased. There is sufficient evidence to support the claim that 18% of workers indicate that they are mildly satisfied with their job has increased.
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Transcribed Image Text:From previous studies, it is concluded that 18% of workers indicate that they are mildly satisfied
with their job. A researcher claims it has increased and decides to survey 100 adults. Test the
researcher's claim at the a = 0.05 significance level.
Preliminary:
a. Is it safe to assume that n ≤ 0.05 of all subjects in the population?
No
b. Verify nô(1 - p) ≥ 10. Round your answer to one decimal place.
nô (1 − p) =
=
Yes
Test the claim:
a. Express the null and alternative hypotheses in symbolic form for this claim.
Ho: ?
Ha: ?
b. After surveying 100 adult Americans, the researcher finds that 43 workers indicate that they
are mildly satisfied with their job. Compute the test statistic. Round to two decimal places.
2 =
c. What is the p-value? Round to 4 decimals.
P =
d. Make a decision based on a = 0.05 significance level.
Reject the null hypothesis.
Do not reject the null hypothesis.
e. What is the conclusion?
There is not sufficient evidence to support the claim that 18% of workers indicate
that they are mildly satisfied with their job has increased.
O There is sufficient evidence to support the claim that 18% of workers indicate that
they are mildly satisfied with their job has increased.
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