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1. You want to determine if eating more fruits reduces a person's chance of developing cancer. You watch people over the years and ask them to tell you how many servings of fruit they eat each day. You then record who develops cancer. How do I identify if this is a cross-sectional study, a retrospective study, or a prospective study?
2. To determine if a new medication reduces headache pain, you randomly give some patients are given the new medication and others are given a placebo. The pain levels of a patient are then recorded. How can I tell if this is an experiment or observational study?
Critique the HR manager's planned approach and give him advice on how to proceed. You can assume that a reasonable estimate for the proportion of new hires that are happy with the company is .8.
A particle source A emits one particle at a time, according to a Poisson process with an intensity of two particles a minute. Another particle source B emits two particles at a time, according to a Poisson process with an intensity of one pair of ..
analyze the monthly returns for freddie mac since august 1 1989.step 1 download the monthly returns for freddie mac
Identify and analyze the characteristics of effective teams. Discuss and analyze the need for leaders to monitor both the internal and external environments.
Based on information in Statistical Abstract of the United States (116th Edition); the average annual miles driven per vehicle in the United States is 11.1 thousand miles, with c = 600 miles. Suppose that a random sample of 42 vehicles owned by re..
The average price of a sample of 12 bottles of diet salad dressing taken from different stores is $1.43. The standard deviation is $0.09. The average price of a sample of 16 low-calorie frozen desserts is $1.03.
the kamp family has twins rob and rachel. both rob and rachel graduated from college two years ago and each is now
according to the internal revenue service the mean tax refund for the year 2007 was 2708. assume the standard deviation
the fracture strength of tempered glass averages 14 measured in thousands of pounds per square inch and has standard
a poker hand consists of 5 cards chosen randomly from a standard 52 card deck.a find the chance that you are dealt a
the movie 2012 is based on several doomsday prophecies as disparate as the mayan calendar numerological constructions
Also, for n = 25 and n = 100, find the probability that the maximal distance of the particle to its starting point during the n steps will exceed 1.65.
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