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An article is USA Today stated that "Internet surveys paid for by directory assistance providers show that even the most accurate companies give out wrong numbers 15% of the time". Assume that you are testing such a provider by making 10 (independent) requests and also assume that the provider gives the wrong telephone number 15% of the time. Find the probability of getting at most two wrong numbers.
Pollsters just report the results of hypothesis tests that show statistical significance but not those in which there was insufficient evidence.
A machine produces 12,000 bolts per day, with a 3% defect rate. What is the probability that twelve defective bolts will be found in a sample of 600 bolts?
each day a large animal clinic schedules 10 horses to be tested for a common respiratory disease. the cost of each test
From a statistical point of view, J. Park and Park (2016) reveal a population is all "persons, objects, institutions, or other entities" that can facilitate.
A sample of charge accounts at a local drug store revealed the following frequency distribution of unpaid balances. Determine the standard deviation. Compute the coefficient of variation.
Do the effects of being born prematurely linger into adulthood?- Is this evidence that babies born with a very low birth weight are more likely to be smaller than normal adults?
The associated standard deviations are $ 8. thousand, $ 10. thousand, and $ 2. thousand. Assuming independence of outcomes, find the mean and standard deviation (in thousands of $) of the consultant's total profit from these three projects.
Let X1,..., Xn be a random sample recorded as heads or tails resulting from tossing a coin n times with unknown probability p of heads. Find the MLE pˆ of p.
statistics are tools which can hep business perform many business functions. please choose one of the following
The probability that Pete will catch fish when he goes fishing is .8. Pete is going to fish three days next week. Define the random variable x to be the number of day Pete catches fish. (hint. binomial distribution)
the following data look at the association between group membership and whether or not the adolescent has had sexual
Jamal has just left home and must attend an important meeting with the CEO in just 25.0 minutes. If the CEO routinely fires employees who are tardy, what is the probability that Jamal will be going to work tomorrow?
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