Complete Parts A Through D 1 (32.21 KiB) Viewed 21 times
Complete Parts A Through D 2 (9.87 KiB) Viewed 21 times
Complete Parts A Through D 3 (19.49 KiB) Viewed 21 times
Complete Parts A Through D 4 (11.97 KiB) Viewed 21 times
Assume that the differences are normally distributed. Complete parts (a) through (d) below. 1 3 4 5 8 Observation X Y 2 45.3 6 48.0 7 47.9 51.4 45.5 41.9 47.7 44.0 52.5 46.7 49.9 45.6 47.1 48.7 50.2 46.9 (a) Determine di = X - Y for each pair of data. 3 4 5 6 7 8 Observation 1 2 d (Type integers or decimals.)
(b) Computed and so Recall that the mean of a variable is computed by adding all the values of the variable in the data set and dividing by the number of observations. Find the sum of the differences Computed, rounding to three decimal places as needed.
(c) Test if Hd <0 at the a = 0.05 level of significance.
(d) Compute a 95% confidence interval about the population mean difference Hd While either technology or a table of critical values and a formula could be used to find the confidence interval, in this problem, use technology to find the confidence interval, rounding to two decimal places. The lower bound is The upper bound is
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