Question 1 1 pts Ginger has decided to do an experiment to nd out if a particular diet plan improves vision. Ginger has two volunteers who have the same vision problem. Ginger randomly assigns one person to complete the diet and one person to eat normally then checks the differences in their vision after 3 weeks. Which part of the well-designed experiment is not followed? 0 Control group 0 Comparisons of at least two treatment groups. 0 Random assignment/allocations of treatments to experimental units. 0 Replication: more than one experimental unit in each treatment group. Question 2 1 pts An experiment will be conducted in which 20 Heirloom Tomato plants are randomly assigned to two groups. The plants in group one will receive fertilizerA and the plants in group two will receive fertilizer B. All other growing conditions, including the amount of sunlight and water, will be kept the same for the two groups. The growth of the tomato plants will be compared for the two groups. What are the experimental units in this experiment? 0 The two types of fertilizer O The 10 plants assigned to group one Q The 20 heirloom tomato plants 0 Sunlight and amount of water L) Question 3 1 pts Marketing researchers wonder if the color and type of a candy's packaging may inuence sales of the candy. They manufacture test packages for chocolate mints in three colors (red, green, and white) and two types of packaging (box/bag). Suspecting that sales may depend on a combination of package color and type, the researchers prepare six different packages, then market them for several weeks in department stores in various locations. In this experiment What are the factors? 0 chocolate mints 0 box or bag 0 red, green and white 0 Color and package type \"HHJ'IUII _I' J. PI\") The manager of the produce department at a large grocery store wanted to investigate whether bananas stored in the warehouse would stay fresh longer if they were stored in a new special crate vs. keeping the bananas in the shipping containers until they are set out in the store. For a shipment of bananas that was delivered to the store, the manager ipped a coin before placing each bunch of bananas in either the new special crate or leaving them in the shipping container. If the coin landed on heads, the manager placed the bunch in the new crate, if the coin landed on tails, he left them in the shipping container. The manager then noted the "freshness" of the bananas when they were moved into the store's produce department the next day. Which of the following is the best description of the method used by the produce manager? 0 A census, because all bananas are assigned to either the special crate of the shipping container. 0 An experiment with a completely randomized design. 0 An observational study. 0 An experiment with a blocked design, with blocking by type of container. Question 5 1 pts Researchers conducted a study to investigate the effects of frozen meals on weight gain. From a sample of 90 adult volunteers, 45 were randomly assigned to consume frozen meals at least twice per week while following the Standard American Diet. The remaining 45 were asked to avoid frozen meals and eat fresh meals while following the Standard American Diet. At the end of six months, the amount of weight gain/loss for each participant was recorded. The people in the group who ate the frozen meals had, on average, a higher weight gain than the people who ate fresh meals. Which of the following is the most appropriate conclusion? 0 There is evidence that consuming frozen meals causes more weight gain than eating fresh meals and the conclusion can be generalized to all adults. 0 Although cause and effect cannot be established, there is an association between consuming frozen meals and weight gain for the population of all adults. 0 There is evidence that consuming frozen meals causes more weight gain than eating fresh meals and the conclusion can be generalized to all people who eat frozen meals. 0 There is evidence that consuming frozen meals causes more weight gain than eating fresh meals and the conclusion can be generalized to adults similar to those in the study