A local consumer reporter wants to compare the average costs of grocery items purchased at three different supermarkets, A, B, and C. Prices (in dollars) were recorded for a sample of 60 randomly selected grocery items at each of the three supermarkets. In order to reduce item-to-item variation, the prices were recorded for each item on the same day at each supermarket.
The results of the ANOVA are summarized in the following table.
| Source | df | Anova SS | Mean Square | F Value | Pr > F |
| Supermkt | 2 | 2.6412678 | 1.3206399 | 39.23 | 0.0001 |
| Item | 59 | 215.5949311 | 3.6541514 | 108.54 | 0.0001 |
| Error | 118 | 3.9725322 | 0.0336655 |
| Corrected Total | 179 | 222.2087311 | |
Based on the
p-value of the test, make the proper conclusion.
◦ No conclusions can be drawn from the given information.
◦ There is sufficient evidence (at
α = .01) to indicate differences among the mean prices of grocery items at the three supermarkets.
◦ There is sufficient evidence (at
α = .01) to indicate that the mean prices of grocery items at the three supermarkets are identical.
◦ There is insufficient evidence (at
α = .01) to indicate differences among the mean prices of grocery items at the three supermarkets.
Average Chemical Composition of the Geosphere Crust
Average national IQs according to IQ and Global Inequality
Some IAC units are purchased with the housing as shown. Carbon buildup in these passages can cause ...
Local Winds
Recommended Maximum Doses of Local Anesthetics with Vasoconstrictor
Sadie is going to see a movie and is taking her four kids. each movie ticket costs $15 and ...