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What are some issues with trying to make predictions based upon only a few data points? How many data points must we have before we are certain about predicting the future?
Explain why we cannot use their data to set up a confidence interval for the proportion of all church abuse victims who were male.
According to the Center for Work-Life Policy, a survey of 500 highly educated women who left careers for family reasons found that 66% wanted to return to work.
a baseball player would like to conduct an experiment to determine how the weight of his bat the speed of a pitch and
Do the data support the view that students should not change their initial choice of an answer?
Do the data indicate a significant difference? Test with ∝ = .05.
Do the confidence interval limits contain 0, indicating that there is not a significant difference between the times of the first and second trials?
Problem: Random digits. The table of random digits (Table B) was produced by a random mechanism that gives each digit probability 0.1 of being a 0.
the high school dropout rate in the state in the state for the year 2000 was 10.8 one school district who adopted the
Construct a 99% confidence interval for the difference between the two population proportions, p 1 minus p 2p1-p2. Use x 1=111, n 1 =727, x2=54, and n2=628
A pharmaceutical company wants o test a new cholesterol drug. The average cholesterol of the target population is 200 mg and they have a standard deviation of 25 mg. The company wished to test a sample of people who fall between 1.5 and 3.0 z sco..
The selection is made at random so that the selection of any component is equally likely. What is the probability of drawing any faulty component if 3 different components are drawn?
1. If you lived in England in seventeenth century and decided that you wanted to emigrate to the new world, which colony would you have chosen, Virginia or Massachusetts bay? why? 2. Discuss possible motivation for john smith having written "The S..
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