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.
Change in Emotional States During Adolescence Average emotional state becomes teadilyi more negativ
Health Care Costs for the Elderly and Disabled
Selected Local Anesthetics
Noid lights are usually purchased as an assortment so that one is available for any type or size ...
Local Anesthetic Agents
Calculation of the Amount of the Local Anesthetic and Vasoconstrictor