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Suppose a researcher is conducting a randomized experiment to compare a herbal remedy and placebo for treating common cold. The response variable are the cold's severity and duration. There are 4 volunteers, two men (Anuj and Rishi) and two women (Swati and Prabha). Two of these volunteers will be randomly chosen to receive the herbal remedy and the rest two will receive the placebo.
Q1. Identify the possible samples to receive the herbal remedy. This is the sample space for randomly choosing 2 out of 4 people.
Q2. For each possible sample, what is the probability that it is chosen ? Since each possible sample is equally likely, each of them has probability of of being chosen. Clearly the total probability of the sample space is
Q3. What is the probability of the event that a man-woman pair will receive the herbal remedy ?
The event in which a man-woman pair will be selected consists of the outcomes Since each outcome has probability , the probability of this event is.
In the discussion, you will examine a series of analyses that are used to assess mean differences in groups. These analyses are being used in the research
shortly after september 11th 2001 a researcher wanted to determine if the proportion of females that favored war with
annual maximum wind speed gusts have been modeled as both a type i gumbel and type ii largest extreme value. if the
(a) Find a 99% confidence interval for the average car insurance premium and interpret your result. (b) What is the margin of error when using $780 to estimate the population average car insurance premium with 99% confidence? [Hint: (U-L)/2 ]
Remember to explain what details and experiences these ex-slaves gave in describing the institution of slavery and the practice of slavery.
When a researcher uses random samples of 400 to make conclusions about larger population example
a casino gambler assums the dice he uses are fair. an investigator recorded the outcomes of 600 rolls of such a
Find a 98% con?dence interval for the mean P/E multiples. Interpret the result and state any assumptions you have made.
Assuming the admission rate is still 16%, in a sample of 100 applicants to Cornell, what is the probability that exactly 15 will be admitted?
When do Americans decide what to make for dinner? An online survey (N. Hellmich, Americans Go for the Quick Fix for Dinner, USA Today, February 14, 2005, p. 1B)
Without looking, how many names would you need to pull out of the hat to be sure you get two girls? How many names would you need to pull out of the hat to be sure you get either two boys or two girls
Find the probability that in a given year,a) Exactly one major hurricane will strike the U.S. mainland
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