In order to test whether brand-name printer cartridges produce more printed pages, on average, than generic cartridges, a research firm has 6 randomly selected printer users use both types of cartridges and record how many pages were printed with each. The number of pages printed for each user by each type of cartridge are shown on the answers sheet in cells F92 to G98.
User | Name Brand | Generic | difference |
1 | 306 | 300 | |
2 | 256 | 260 | |
3 | 402 | 357 | |
4 | 299 | 286 | |
5 | 306 | 290 | |
6 | 257 | 260 |
using 0.01 significance level
Define H0 : |
Define H1 : |
Test statistic |
Critical value of test statistic |
Decision rule |
Calculated value of test statistic |
Reject or fail to reject H0? |
Conclusion about the cartridges |
Find the p-value |
Interpret p-value |
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