Chapter 1: Q 1.15 (page 31)
1.15 From Table 1.13, find the percentage of rainfall that is between 6.99 and 13.05 inches.
Percentage of rainfall between 6.99 and 13.05 inches is 64%.
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The instructor takes her sample by gathering data on five randomly selected students from each Lake Tahoe Community College math class. The type of sampling she used is
a. cluster sampling
b. stratified sampling
c. simple random sampling
d. convenience sampling
For the following exercises, identify the type of data that would be used to describe a response (quantitative discrete, quantitative continuous, or qualitative), and give an example of the data. time in line to buy groceries.
A marketing company is interested in the proportion of people who will buy a particular product.
The data are the colors of houses. You sample five houses. The colors of the houses are white, yellow, white, red, and white. What type of data is this?
Discuss potential violations of the rule requiring informed consent.
a. Inmates in a correctional facility are offered good behavior credit in return for participation in a study.
b. A research study is designed to investigate a new children’s allergy medication.
c. Participants in a study are told that the new medication being tested is highly promising, but they are not told that only a small portion of participants will receive the new medication. Others will receive placebo treatments and traditional treatments.
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