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Cheating during a test: 2002 versus 2004. In Exercise 8.16, you examined the proportion of high school students who cheated on tests at least twice during the past year. Included in that study were the results for both 2002 and 2004. A reported 9054 out of 24,142 students said they cheated at least twice in 2004. A reported 5794 out of 12,121 students said they cheated at least twice in 2002. Give an estimate of the difference between these two proportions with a 90% con?dence interval.
Decision analysis can be used on itself! What do you want to accomplish in studying decision analysis? Why is decision analysis important to you? In short, what are your fun damental objectives in studying decision analysis?
For a simple random sample of 36 recent customers, invoke the central limit theorem and determine the probability that their average waiting time was at least 4.0 minutes.
a researcher is interested in whether students who attend private elementary schools do any better on s standard test
What assumption tests should be used? A fifth grade science teacher want to know if there is a relationship between final exam scores and overall course points after adjusting for a quiz score.
What is the relationship between descriptive statistics and Affirmative Action ? Can using probability in market trending decisions lead to a bad decision? Explain?
Bolts are randomly selected until a 5 mm bolt is obtained. The outcomes are the sequences of bolts that can be selected. So one outcome is 1, and the other is 342. List the equally likely outcomes.
Use the following equation for questions 1 and 2. (y + 5)2 = -12(x - 7) 1. Given the above equation of a parabola find the coordinates of the Vertex.
a packet of sunflower seeds states that each seed will germinate with probability 0.7. a gardener randomly selects 6
a researcher in colorado is trying to improve plant growth. they want to see how combinations of different brands of
messages are transmitted from low speed terminals and arrive at a message concentrator at a poisson rate of 600hr.
give two suggestions regarding how a statistician might generate probability estimates when empirical data is
the following is a cross-tabulation taken from a subset of the 2010 general social survey. respondents were asked
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