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Finding p hat of two stats stat crunch8/13/2023 It has a margin of sampling error of plus or minus 4 percentage points. The telephone poll of 602 likely Michigan voters was conducted Sept. The EPIC-MRA poll conducted for The Detroit News and television stations WXYZ, WILX, WOOD and WJRT found 50 percent of likely Michigan voters support the stem cell proposal, 32 percent against and 18 percent undecided. pollĪ recent poll shows voter support leading opposition for ballot proposals to loosen Michigan's restrictions on embryonic stem cell research and allow medical use of marijuana. Stem cell, marijuana proposals lead in Mich. This isn't something every statistics text will mention, nor will every instructor mention, but it's important.Ĭonsider the excerpt shown below (also used in Example 1, in Section 9.3) from a poll conducted by Pew Research: The problem is that it's relatively easy to get a large p-value - just get a really large sample size! So the chart above is really with the caveat " assuming equal sample sizes in comparable studies. These values are not hard lines, of course, but they can give us a general idea of the strength of the evidence.īut wait! There is an important caveat here, which was mentioned earlier in the section about The Controversy Regarding Hypothesis Testing.
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