A matched pairs experiment compares the taste of instant with fresh-brewed coffee. Each subject tastes two unmarked cups
Posted: Wed May 11, 2022 3:03 pm
A matched pairs experiment compares the taste of instant with fresh-brewed coffee. Each subject tastes two unmarked cups of
coffee, one of each type, in random order and states which they prefer. Of the 50 subjects who participate in the study, 32
preferred the fresh-brewed coffee.
Is your result significant at the 5% level? What is your practical conclusion?
A. Although there is evidence that more than 50% of people prefer fresh-brewed coffee (P < 0.05), as the test is
one-tailed, it is possible that the size of the difference is small, because the lower limit of the confidence interval is
approximately 0.50.
0%
B. Although there is evidence that more than 50% of people prefer fresh-brewed coffee(P < 0.05), as the test is one-tailed,
it is possible that the size of the difference is large, because the lower limit of the confidence interval is
approximately 0.50.
100%
Correct
C. Because there is evidence of no difference from 50% of people preferring fresh-brewed coffee (P > 0.05), it is possible
that the size of the difference is small, because the lower limit of the confidence interval is approximately 0.50.
100%
Correct
D.Although there is evidence that less than 50% of people prefer fresh-brewed coffee(P < 0.05), as the test is one-tailed,
it is possible that the size of the difference is small, because the lower limit of the confidence interval is
approximately 0.50.
coffee, one of each type, in random order and states which they prefer. Of the 50 subjects who participate in the study, 32
preferred the fresh-brewed coffee.
Is your result significant at the 5% level? What is your practical conclusion?
A. Although there is evidence that more than 50% of people prefer fresh-brewed coffee (P < 0.05), as the test is
one-tailed, it is possible that the size of the difference is small, because the lower limit of the confidence interval is
approximately 0.50.
0%
B. Although there is evidence that more than 50% of people prefer fresh-brewed coffee(P < 0.05), as the test is one-tailed,
it is possible that the size of the difference is large, because the lower limit of the confidence interval is
approximately 0.50.
100%
Correct
C. Because there is evidence of no difference from 50% of people preferring fresh-brewed coffee (P > 0.05), it is possible
that the size of the difference is small, because the lower limit of the confidence interval is approximately 0.50.
100%
Correct
D.Although there is evidence that less than 50% of people prefer fresh-brewed coffee(P < 0.05), as the test is one-tailed,
it is possible that the size of the difference is small, because the lower limit of the confidence interval is
approximately 0.50.