In: Statistics and Probability
uppose the following data are product weights for the same items produced on two different production lines.
Line 1 | Line 2 |
---|---|
13.7 | 13.9 |
13.5 | 14.3 |
14.0 | 14.4 |
13.1 | 14.0 |
13.8 | 14.7 |
13.4 | 13.2 |
13.6 | 14.8 |
13.7 | 14.5 |
12.1 | 14.2 |
14.8 | 14.6 |
15.0 | |
14.1 |
Test for a difference between the product weights for the two lines. Use α = 0.05.
State the null and alternative hypotheses.
H0: Median for line 1 − Median for line 2
< 0
Ha: Median for line 1 − Median for line 2 =
0H0: Median for line 1 − Median for line 2 ≤
0
Ha: Median for line 1 − Median for line 2 >
0 H0: The two
populations of product weights are not identical.
Ha: The two populations of product weights are
identical.H0: Median for line 1 − Median for
line 2 ≥ 0
Ha: Median for line 1 − Median for line 2 <
0H0: The two populations of product weights are
identical.
Ha: The two populations of product weights are
not identical.
Find the value of the test statistic.
W =
Find the p-value. (Round your answer to four decimal places.)
p-value =
State your conclusion.
Do not reject H0. There is sufficient evidence to conclude that there is a significant difference between the product weights for the two lines.Reject H0. There is not sufficient evidence to conclude that there is a significant difference between the product weights for the two lines. Do not reject H0. There is not sufficient evidence to conclude that there is a significant difference between the product weights for the two lines.Reject H0. There is sufficient evidence to conclude that there is a significant difference between the product weights for the two lines.