Question 1
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.
Identify the treatments for this experiment.
◦ the day on which the data were collected
◦ the 60 × 3 = 180 prices
◦ the three supermarkets
◦ the 60 grocery items
Question 2
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.
Identify the dependent (response) variable for this experiment.
◦ the grocery items
◦ the supermarkets
◦ the prices of the grocery items
◦ the mean prices of the grocery items at each supermarket
Average winter rainfall and variation in rainfall among sites inhabited by Suromalus ater
Mechanism of Action of Local Anesthetics
Local Anesthetic Agents
Herpes is a local contraindication during active phase.
The level of emissions from transport in the United States is twice as high as the global average
From Farm to Consumer