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For people with a certain disease, the length of time Y spent in remission is described by the following pdf
f(y) = (1/9)y^2, 0<=y<=3
where Y is measured in years.
What is the probability that a patient's remission lasts longer than 1 year?
Box 1 has 3 chips numbered 1,2,3. Box 2 has 2 chips numbered 1 and 2. Suppose a chip is randomly selected from box 1 and placed in box 2.
Use MegaStat's output for multiple regression to determine the multiple regression equation
A pollster calls 500 randomly selected people and all 500 respond to her first question. Because the subjects agreed to respond, is the sample a voluntary response sample?
The mean time between reoccurring events is exponentially distributed with a mean time between events of 15 minutes.
Let X be the number of yes votes obtained from a random sample of 200 out of the entire voting population. What is the expected value of X if, in fact, 65% of all voters supported the dictator?
Employees of a local university have been classified according to gender and job type. The following table provides data about the employees.
The probability that a new advertising campaign will increase sales is assessed as being 0.60. The probability that the cost of developing the new ad campaign can be kept within the original budget allocation is 0.50.
What is the difference between strong negative and strong positive correlation? What does zero correlation tell you? Can you share a relationship between two variables that is typically negative?
A high school counselor is interested in the percentage of students who will be going to college. She randomly picks 60 students and finds that 53 will be going to college. Use a 95% confidence level to find the population proportion.
Computing the probability values using normal distribution - Find the probability that a regular rat (without the supplement) would solve the maze with a score less than or equal to X = 24 errors?
A person must score in the upper 2% of the population on an IQ test to qualify for member ship in Mensa, the international high-IQ society. If IQ scores are normally distributes with a mean of 100 and a standard deviation of 15, what score must a ..
In Excel use the Descriptive Statistics and comment on the mean, the skewness, the standard deviation and kurtosis.
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