I need C only but you may need the A and B to get C. A matched pairs experiment compares the taste of instant coffee with fresh-brewed coffee. Each subject tastes two unmarked cups of coffee, one of each type, in random order and states which he or she prefers. Of the 50 subjects who participate in the study, 19 prefer the instant coffee and the other 31 prefer fresh-brewed. Let p be the proportion of the population that prefers fresh-brewed coffee. a. Test the claim that a majority of people prefer the taste of fresh-brewed coffee. Report the z test-statistic and its p-value. Is your test result significant at the α = 10% level? What is your practical conclusion? b. Use RStudio to perform the hypothesis testing with significance level α = 10%. Use the data set “COFFEE.xlsx or COFFEE.csv” c. Find a 95% (not 90%) confidence interval for population proportion p.
I need C only but you may need the A and B to get C.
A matched pairs experiment compares the taste of instant coffee with fresh-brewed coffee. Each subject tastes two unmarked cups of coffee, one of each type, in random order and states which he or she prefers. Of the 50 subjects who participate in the study, 19 prefer the instant coffee and the other 31 prefer fresh-brewed.
Let p be the proportion of the population that prefers fresh-brewed coffee.
a. Test the claim that a majority of people prefer the taste of fresh-brewed coffee. Report the z test-statistic and its p-value. Is your test result significant at the α = 10% level? What is your practical conclusion?
b. Use RStudio to perform the hypothesis testing with significance level α = 10%. Use the data set “COFFEE.xlsx or COFFEE.csv”
c. Find a 95% (not 90%) confidence interval for population proportion p.
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