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Shoes
A running-shoe manufacturer wants to test the effect of its new sprinting shoe on 100-meter dash times. The company sponsors 5 athletes who are running the 100-meter dash in the 2004 Summer Olympic games. To test the shoe, it has all 5 runners run the 100-meter dash with a competitor s shoe and then again with their new shoe. The company uses the difference in times as the response variable.
a) Suggest some improvements to the design.
b) Why might the shoe manufacturer not be able to generalize the results they find to all runners?
At the .05 level, you are testing whether there is a significant difference in the proportions of college students and similar aged non college students having accidents during the two year period. Is this a 1 or 2 tail test?
Using a test, 80% of Down's Sydrome cases can be identified, while 5% of normals are detected as positive. What is the sensitivity and specificity of the test?
Suppose we randomly sample 400 nucleotides from the human genome. (Consider only a single strand.) Does the occurrence of adenine, thiamine, cytosine and guanine (A, C, T and G) in this sample suggest that nucleotides in the human genome follow a ..
When 186 homes in Hyde Park, NY were tested for radon, 30 were found to have levels above the maximum safety level. What is the percentage of the Hyde Park homes above the maximum safe level of radon?
Every year on Earth Day, a group of volunteers pick up the garbage at Hidden Falls Park. The time it takes to clean the beach varies inversely with the number of people picking up garbage. last year , 33 volunteers took 7 hours to clean the park. ..
the following table gives the average high temperatures in january and july for several european cities. write a 90
consider the following problem a top nhl hockey player scores on 93 of his shots in a shooting competition. what is the
If the airbag activates at a deceleration of 12 mph/s or more, Iacocca would get hurt. What is the probability of his being hurt in this demonstration?
What type of situation would I be able to understand how to use regression as a key driver as an influence in sales or other outcomes?
A sample of 35 workers was randomly selected from a workforce of 110 to estimate the average amount spent weekly at a canteen by each worker.the sample meam was $13 and the sample standard deviation was $3.25.
bob nale is the owner of nales quick fill. bob would like to estimate the mean number of gallons of gasoline sold to
A computer processes jobs on a first-come, first-served basis. The jobs arrive to the computerevery 6 minutes. The objective in processing these jobs is that they spend no more than eight minutes,on average, in the system(Hint: you can use the Go..
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