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A gambler loses 10 times running at roulette. He makes decision to continue playing as he is due for win, by law of averages. Bystander suggests him to quit, on ground that his luck is cold. Who is correct? Or are both of them wrong?
What does the coefficient of determination tell you about the variation attendance and the variation in the number of exhibitors?
Let 3 trails (they may not be independent), each of which is either success or not. Let X denotes number of successes. Assume E[X] = 1.8. Determine the largest possible value of P(X=3)?
What probability distribution does n1 alone have? Specify the values of the sample size index and parameter for that distribution.
The percentage rates of home ownership for 8 randomly selected states are listed below. Estimate the population variance and standard deviation for the percentage rate of home ownership with 99% confidence level.
What is the probability of getting someone who is in the 23-30 age brackets or whom smokes?
Suppose that the distribution of weekly water usage for single-family homes in a particular city is mound shaped and approximately symmetric. The mean is 1400 gallons, and the standard deviation is 300 gallons.
What is the probability of selecting a store at random and finding it has both a pharmacy and a floral shop?
For every additional hour spent studying for the exam you would expect a grade improvement of 60.2 points
Suppose that the number of babies born during an hour at a hospital's maternity wing follows a Poisson distribution with a mean of 4 per hour.
Determine the standard deviation of difference between Sarah's and Richard's scores?
A SRS of size 16 drawn from a Normally Distributed population has a mean of 30 and a standard deviation, s, of 5. With 95% confidence, what is the interval that captures the true mean of the population?
Are all the events in this distribution mutually exclusive? Describe in detail.
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