A sample of 250 adults tried the new multigrain cereal Wow! A total of 187 rated...

A sample of 250 adults tried the new multigrain cereal Wow! A total of 187 rated it as excellent. In a sample of 100 children, 66 rated it as excellent. Using the 0.1 significance level, the researcher wishes to show that adults like the cereal better than children. Which of the following is the alternate hypothesis?

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Of 250 adults who tried a new multi-grain cereal, "Wow!", 187 rated it excellent; of 100...

Of 250 adults who tried a new multi-grain cereal, "Wow!", 187 rated it excellent; of 100 children sampled, 66 rated it excellent. Using the 0.1 significance level and the alternate hypothesis π1 not equal to π2 , what is the null hypothesis? Select one: a. π1 = π2 b. π1 ≠ π2 c. π1 < π2 d. π1 > π2

Of 150 adults who tried a new cranberry-flavored peppermint patty, 90 rated it excellent. Of 250...

Of 150 adults who tried a new cranberry-flavored peppermint patty, 90 rated it excellent. Of 250 children sampled, 190 rated it excellent. Use the 0.03 level of significance. Regarding whether there is a significant difference in the proportion of adults and the proportion of children who rate the new flavor as excellent, which of the following is correct?

A researcher claims that 19% of US adults are smokers. In a random sample of 250...

A researcher claims that 19% of US adults are smokers. In a random sample of 250 US adults 55 were found to be smokers. Use a 0.05 significance level to test the researcher’s claim. please show step by step details

In 2011, when the Gallup organization polled investors, 34% rated gold the best long-term investment. But in April of 2013 Gallup surveyed a random sample of U.S. adults.

In 2011, when the Gallup organization polled investors, 34% rated gold the best long-term investment. But in April of 2013 Gallup surveyed a random sample of U.S. adults. Respondents were asked to select the best long-term investment from a list of possibilities. Only 241 of the 1005 respondents chose gold as the best long-term investment. By contrast, only 91 chose bonds. a. Compute the standard error for each sample proportion. Compute and describe a 95% confidence interval in the context...

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