A survey collected data on attitudes toward the quality of customer service in retail stores. The survey found that 270 of the 750 American adults sampled felt that customer service is better today than it was two years ago. Find a 94% confidence interval for the proportion of American adults who feel customer service is better today than it was two years ago. p^±z⋅CFp^(1−p^)n−−−−−√p^±z⋅CFp^(1−p^)n Note: Since the population is filled with words, μμ and σσ dont exist. We are trying to estimate a proportion here. What is p^p^ ? ["", "", "", ""] What is the value for z? ["", "", "", ""] What is CF? ["", "", "", ""] What is n?
A survey collected data on attitudes toward the quality of customer service in retail stores. The survey found that 270 of the 750 American adults sampled felt that customer service is better today than it was two years ago.
Find a 94% confidence interval for the proportion of American adults who feel customer service is better today than it was two years ago.
p^±z⋅CFp^(1−p^)n−−−−−√p^±z⋅CFp^(1−p^)n
Note: Since the population is filled with words, μμ and σσ dont exist. We are trying to estimate a proportion here.
What is p^p^ ? ["", "", "", ""]
What is the value for z? ["", "", "", ""]
What is CF? ["", "", "", ""]
What is n?
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