To test for any significant difference in the number of hours between breakdowns for four machines, the following data were obtained.
Machine 1 |
Machine 2 |
Machine 3 |
Machine 4 |
---|---|---|---|
6.8 | 9.1 | 10.7 | 9.6 |
8.1 | 7.8 | 9.9 | 12.7 |
5.5 | 9.6 | 9.3 | 11.9 |
7.7 | 10.5 | 9.9 | 10.6 |
8.7 | 9.4 | 8.9 | 11.2 |
7.6 | 10.0 | 8.9 | 11.2 |
Use Fisher's LSD procedure to test for the equality of the means for machines 2 and 4. Use a 0.05 level of significance.
Find the value of LSD. (Round your answer to two decimal places.)
To test
against
Since, the sample sizes for the two populations (Machine 2 and 4 ) are small and also the population variances are unknown we use t test.
To test for any significant difference in the number of hours between breakdowns for four machines,...
#2 Consider the followi ng sample of 44 observations: 8.9: 12.4: 8.6: 11.3; 9.2; 8.8;8.8; 6.2; .07; 7.1; 8; 10.7; 7.6; 9.1; 9.2; 8.2; 9.0; 8.7; 9.1; 10.9;10.3; 9.6; 7.8; 11.5; 9.3; 7.9; 8.8; 12.7; 8.4; 7.8; 5.7; 10.5; 10.5; 9.6; 8.9;10.2; 10.3; 7.7; 10.6; 8.3; 8.8; 9.5; 8.8; 9.4. 1. Find the mean and the standard deviation for the data given. We were unable to transcribe this image
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Consider the following sample of 44 obscrvations: 8.9; 12.4; 8.6; 11.3; 9.2; 8.8; 8.8; 6.2; .07; 7.1; 11.8; 10.7; 7.6;9.1; 9.2; 8.2; 9.0; 8.7;9.1; 10.9; 10.3; 9.6; 7.8; 11.5; 9.3; 7.9; 8.8; 12.7; 8.4; 7.8; 5.7; 10.5; 10.5;9.6; 8.9; 10.2; 10.3; 7.7; 10.6; 8.3; 8.8; 9.5; 8.8; 9.4. 1. Find the mcan and the standard deviation for the data given 2. Calculate the interval for y± ks for k E {1, 2, 3). C ount the number of mcasureents that...