Question
statistics homework help. can someone please help? organic food a 2014 consumer reports national research center survey on food labeling found that 49% of a
statistics homework help.
can someone please help?
organic food
a 2014 consumer reports national research center survey on food labeling found that 49% of a random sample of 1004 Americans adults report looking for information on food labels about whether the food they are purchasing is organic. this survey result and table 21.1 give 70%, 80%, 90%, and 99%. confidence intervals for the proportion of all adults who feel this way. what do results show about the effect of changing the confidence level?
Gun Control
reports a pew research center poll in which 693 of a random sample of 1507 adults were in support of controls on gun ownership. use table 21.1 to give a 90% confidence interval for the proportion of all adults who feel this way. how does the interval compare with the 95% confidence interval from exercise 21.12?
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