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Problem: Nickels falling over. You may feel that it is obvious that the probability of a head in tossing a coin is about 1/2 because the coin has two faces. Such opinions are not always correct. Stand a nickel on edge on a hard, flat surface. Pound the surface with your hand so that the nickel falls over.
Required:
1. What is the probability that it falls with heads upward? Make at least 50 trials to estimate the probability of a head.
classified ads in newspaper offered for sale 19 used cars of the same make and model. the output of regreesion analysis
What is the probability that the test will commit a Type II error?
what is the f ratio? why is the computation of the f ratio based on mean squares instead of sums of
A study of 200 commercial firms revealed the data below. What is the probability that a particular firm will have 1 million or more in income after taxes?
A common error is neglecting to get ranked data for some statistical processes. Why do we have to have ranked data? Give an example of where you would need ranked data.
Check that the function: f(x1, x2, x3) = (x1)^2 + (x2)^2 + (x3)^2 - x1 - x2 - x3 is convex. Find the extreme values of f under the conditions:
Assuming that both patients are on time, find the expected amount of time that the 1:30 appointment spends in the doctor's office.
Researchers testing a new medication find that 7% of users have side effects. To how many pa- tients would a doctor expect to prescribe the medication before finding the first one who has side effects?
Standard deviation of this poll is 4%. What would be standard deviation if sample size were increased from 83 to 190?
Compute the 95% confidence interval on the population mean if a sample of 1000 is taken and the sample mean is found to be 15.95 and standard deviation is 4.2.
Bernoulli, part 2. Can we use probability models based on Bernoulli trials to investigate the following situations? Explain. a) You are rolling 5 dice. How likely is it to get at least two 6's to win the game? b) You survey 500 potential customers to..
In 2007, the IRS audited 1.77% of individual tax returns with income greater than $100,000. What is the probability that two randomly selected returns with income greater than $100,000 will be audited?
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