Life on Other Planets Forty-six percent of people believe that there is life on other planets in the universe. A scientist does not agree with this finding. He surveyed 125 randomly selected individuals and found 75 believed that there is life on other planets. At α=0.05 , is there sufficient evidence to conclude that the percentage differs from 46% ? Use the critical value method with tables. (a)State the hypotheses and identify the claim. H0: claim/don’t claim? H1: claim/don’t claim? This hypothesis test is a one tailed/two-tailed test? (b)Find the critical value(s). Round the answer to two decimal places. If there is more than one critical value, separate them with commas. Critical value(s): (c)Compute the test value. Round the answer to at least two decimal places. z =
Life on Other Planets Forty-six percent of people believe that there is life on other planets in the universe. A scientist does not agree with this finding. He surveyed 125 randomly selected individuals and found 75 believed that there is life on other planets. At α=0.05 , is there sufficient evidence to conclude that the percentage differs from 46% ? Use the critical value method with tables.
(a)State the hypotheses and identify the claim.
H0: claim/don’t claim?
H1: claim/don’t claim?
This hypothesis test is a one tailed/two-tailed test?
(b)Find the critical value(s). Round the answer to two decimal places. If there is more than one critical value, separate them with commas.
Critical value(s):
(c)Compute the test value. Round the answer to at least two decimal places.
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z |
= |
(d)Make the decision.
Reject/do not reject the null hypothesis.
(e)Summarize the results.
There is/is not enough evidence to support the claim that the percentage of people who believe that there is life on other planets differs from 46%
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