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1. Such things as historical documents, newspaper reports, TV and radio broadcasts, when used in research, represents
a) Unscientific methods
b) Case-study methods
c) Archival methods
d) Unreliable sources
2. Jane Goodall observed chimpanzees fighting and killing each other. Which of the following methodologies would be most useful in telling us what caused the chimpanzee's behavior?
a) Case-study
b) Naturalistic research
c) Quasi-experimental research
d) Higher constraint research
Mean threshold values and standard deviations for the three groups are given below. Normal probability plots showed the three populations were well approximated by the Normal distribution.
Number of miles flown in a One- year period by the sample of "frequent flyers" was recorded. Is this a grouped or an ungrouped frequency distribution?
A bank official reported the results of a regression analysis designed to predict the bank's charges (y), measured in dollars per month, for services rendered to local companies.
How strong is the evidence against the company's claim? Based on these data, the P -value of the appropriate test
An automobile insurance company estimates the following loss probabilities for the next year on a $25,000 sports car:
For each of the 50 states and Washington, D.C., a number of statistics related to education are available for 1992
Answer the following three questions based on what you know about statistics now.
The sample mean of the number of spots on the 6000 rolls, should be about If this die is rolled 6000 times, the number of times we get a 2 or a 3 should be about
Test hypothesis that both propellants have same mean burning rate. Utilize α=0.05. Compute the P value.
Calculate the suitable mean response time from both proposed locations and find out which proposed site must be selected for the new emergency facility.
At the 0.05 significance level, can he conclude that number of absences has declined? calculate approximately the p -value.
A radio station wants to know if residents in their area are in favor of a proposed tax increase. They invite listeners to call in to respond to the poll. 645 of the 800 who responded were against the tax.
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