Facts About the F Distribution Quiz

PDF page 741: 72. Sanjay made identical paper airplanes out of three different weights of paper: light, medium, and heavy. He

PDF page 741: made four airplanes from each of the weights and launched them himself across the room. Here are the distances (in meters) that his planes flew.

PDF page 741: made four airplanes from each of the weights and launched them himself across the room. Here are the distances (in meters) that his planes flew.

PDF page 742: 5.1 meters 3.1 meters 4.7 meters 5.3 meters

PDF page 742: d. Does the weight of the paper have an effect on how far the plane will travel? Use a 1 percent level of

PDF page 742: b. Why is this a balanced design?

PDF page 741: made four airplanes from each of the weights and launched them himself across the room. Here are the distances (in meters) that his planes flew.

PDF page 747: 81. Thirty men in college were taught a method of finger tapping. They were randomly assigned to three groups of

PDF page 747: 81. Thirty men in college were taught a method of finger tapping. They were randomly assigned to three groups of

PDF page 747: 10, with each receiving one of three doses of caffeine: 0 mg, 100 mg, or 200 mg. This is approximately the amount in zero, one, or two cups of coffee. Two hours after ingesting the caffeine, the men had the rate of finger tapping per minute recorded. The experiment was double blind, so neither the recorders nor the students knew which group they were in. Does caffeine affect the rate of tapping, and if so how? Here are the data:

PDF page 747: 10, with each receiving one of three doses of caffeine: 0 mg, 100 mg, or 200 mg. This is approximately the amount in zero, one, or two cups of coffee. Two hours after ingesting the caffeine, the men had the rate of finger tapping per minute recorded. The experiment was double blind, so neither the recorders nor the students knew which group they were in. Does caffeine affect the rate of tapping, and if so how? Here are the data:

PDF page 742: quite effective but persisted in the environment and over time proved to be harmful to higher-level organisms. Famously, egg shells of eagles and other raptors were believed to be thinner and prone to breakage in the nest because of ingestion of DDT in the food chain of the birds. An experiment was conducted on the number of eggs (fecundity) laid by female fruit flies. There are three groups of flies. One group was bred to be resistant to DDT (the RS group). Another was bred to be especially susceptible to DDT (SS). The third group was a control line of nonselected or typical fruit flies (NS). Here are the data:

PDF page 742: quite effective but persisted in the environment and over time proved to be harmful to higher-level organisms. Famously, egg shells of eagles and other raptors were believed to be thinner and prone to breakage in the nest because of ingestion of DDT in the food chain of the birds. An experiment was conducted on the number of eggs (fecundity) laid by female fruit flies. There are three groups of flies. One group was bred to be resistant to DDT (the RS group). Another was bred to be especially susceptible to DDT (SS). The third group was a control line of nonselected or typical fruit flies (NS). Here are the data:

PDF page 743: The values are the average number of eggs laid daily for each of 75 flies (25 in each group) over the first 14 days of their lives. Using a 1 percent level of significance, are the mean rates of egg selection for the three strains of fruit fly different? If so, in what way? Specifically, the researchers were interested in whether the selectively bred strains were different from the nonselected line, and whether the two selected lines were different from each other. Here is a chart of the three groups: