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A hypertension trial is mounted and 12 participants are randomly assigned to receive either a new treatment or a placebo. Each participant takes the assigned medication and their systolic blood pressure (SBP) is recorded after 6 months on the assigned treatment. The data is shown on the table. Is there a difference in mean SBP between treatments? Run the appropriate test at α= 0.05
Placebo New Treatment134 114143 117148 121142 124150 122160 128
Perform the trend analysis of Pf with incrementally increasing number of the simulation cycles, and calculate the statistical uncertainty in the estimate expressed as the coefficient of variation.
Selection of a location for a prospective Wal-Mart creates many questions for executives. A suitable site would be one that has an adequate demand for Wal-Mart offerings, sufficient transportation resources, and an available labor force.
A sample proportion is calculated from a sample size of 394. How large of a sample would we need in order to decrease the standard error by a factor of 9?
Considering all of the day to day activities you are engaged in at work and in your personal lives, write a 200 (or more) word paper that describes at least three (3) different statistical usages that you see regularly.
The probability that a patient recovers from a disease is 63%. What is the probability that:
In a sample of 50 members of a local health club you find that 12 of these members meet weekly with a physical fitness trainer and that the average body mass index (BMI) of these 12 members is less than the average BMI of the other 38 club members..
What are some conditions under which business decisions are made using subjective probability concepts? Could you please cite two examples of subjective probability.
For a random sample of 50 batteries, what is the probability that the sample mean will be less than 27.5 hours?
What is the probability that a particular driver had exactly two speeding violations?
An educational study utilizes a simple pre post design to assess the efficacy of a computer tutor for solving inequalities.
A car manufacturer tests the first 1,000 cars coming off the assembly line to see if their new anti-lock braking system works correctly. Use the typical values for control limits.
Senator Hayes is considering a a run for the U.S. presidency, but she is only 35 years of age, which is the minimum required age. While investigating this issue, she finds the ages of past presidents when they were inaugurated
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