Kizspy | Question: 68
(Choose 1 answer)
(See picture)
Α. 1.734
Β. 0.673
C. 0.987
D. 1.976
Checking the lengths (cm) of randomly selected products from two manufacturing plants, we get the following data:n_{1}=26,\overline{x}_{1}=6.9,s_{1}=1.26,
n_{2}=23,
\overline{x}_{2}=7.2
s_{2}=1.76
Assume that the variances are equal, what is the width of the 95% confidence interval on the difference in population mean lengths?Let t0.05,47 1.68; 0.025,47 = 2.
