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A bank classifies borrowers as "high risk" or "low risk," and 15% of ots loans are made to those in the "high risk" category. Of all its loans, 5% are in default and 40% of those in default are to high-risk borrowers. What is the probability that a high-risk borrower will default?
Identify the independent and dependent variable, and state the research hypothesis for your study. The variables must be categorical variables.
suppose a reputed psychic in an extrasensory perception esp experiment has called heads or tails correctly on ten
public health officials claim that people living in low income neighborhoods have different physical activity levels
Discuss whether this variable should be placed in the model as an ordinary quantitative variable or by means of four 0, 1 indicator variables.
consumers turned to their mobile devices in growing numbers and increasing frequency throughout 2010. text messaging
A professor of math refutes the claim that the average student spends 3 hours studying for the midterm exam. Which hypothesis is used to test the claim?
2 prizes of $1250, and 1 prize of 3000. Assume that 22,000 lottery tickets are issues and sold for $1. What is the lottery's expected profit per ticket?
In order to conduct testing of the life hours of their light bulbs, they randomly sampled nine light bulbs and measured how many hours they lasted (mean = 346.6). 378, 361, 350, 375, 200, 391, 375, 368, 321 What is the variance?
A researcher was interested in determining whether incentives affect the response rate in surveys. A simple random sample of 50 adult residents of a large city was selected. All were mailed a survey and promised a check upon returning a completed ..
Based on comparing the computed statistic to the critical value which of the following is true and BMI for Boston residents is significantly different than 25.
You randomly select 40 cans and carefully measure the contents. The sample mean of the cans is 127.9 ounces. Does the machine need to be reset? Explain your reasoning.
One particular morning, the length of time spent in the examination room is recorded for each patient seen by each physician at an orthopedic clinic. Does the data prove a significant diference in mean times, using a=.05 Minutes in Examination roo..
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