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Question - AP Statistics scores. In 2001, more than 41,000 Statistics students nationwide took the Advanced Placement Examination in Statistics. The national distribution of scores and the results at Ithaca High School are shown in the table.
a) Is the distribution of scores at this high school significantly different from the national results?
b) Was there a significant different between the performances of boys and girls at this school?
Deduce that the random variable Y in (a) has the density given in (b).
What is the response variable? Is this an experimental study or an observational study? Explain your answer in at most 25-30 words.
Suppose that one fisher from each park is chosen at random. What is the probability that the fisher chosen from Clearwater had a license and the fisher chosen from Mountain View did not have a license?
Recognize and describe potential threats (up to 3) to internal validity.
A company is thinking about launching product. The table below shows the analyst conclusions with respect to the demand and return for the company on the product. Calculate the standard deviation. Show all work
What is probability of selecting 2 families neither had taxes prepared by H&R Block?
find examples in the research that utilize the independent and dependent t-tests that are used to answer a question.
If a random sample of 500 students sit for an exam find the probability that 18% to 23% of the students in the sample will pass it the first time.
What is meant by the corpus delicti of a crime? How does the corpus delicti of a crime differ from the statutory elements that must be proved to convict.
An oil explorer orders seismic tests to determine whether oil is likely to be found in a certain drilling area. The seismic tests have a known reliability.
Determine a setting for the mean number of ounces per bottle of soda that minimizes the expected cost per year of producing soda.
Based on the sample data, should the BPA conclude that there is no difference between the urban and rural residents with respect to median environmental rating?
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