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A population of size 1,000,000 claims has mean cycle time of 15 days, and a standard deviation of 4. 100 random samples of each size 64 are selected. What will be the approximate standard deviation of 100 sample means.
An article contained the following observations on degree of polymerization for paper specimens for which viscosity times concentration fell in a certain middle range.
What is the probability exactly one of the three audited had a charitable deduction of more than $1,000? What is the probability at least one of the audited returns had a charitable contribution of more than $1,000?
How large could a tumor grow before a researcher might consider it to be an outlier and would want to double check the measurement.
Flights arriving at the airport spend anywhere from 50 to 130 minutes in security before unloading passengers. If the unloading times follow the uniform probability distribution, find the average unloading time.
What is the most probable number of patients arriving each Saturday and give the main assumptions we make when we model the above situation using a Poisson distribution.
List the 15 possible samples (without replacement) of two artists that can be selected from the six. for brevity, use the initial provided.
What is the purpose of sampling? What are some concerns and dangers of sampling? How important is the sample design to data validity? Explain.
Suppose that the actual mean value in the population is mu =120 , what is the probability of a Type II error (incorrectly accepting a false null hypothesis)?
Half of those stockbrokers who do not drink coffee, eat a candy bar. What is the probability that a stockbroker who eats candy also drinks coffee?
Determine whether or not the mean waiting time of all customers is significantly more than 3 minutes.
Using a random sample of 100 newly-packed Chococake, it is found that the mean shelf life is 154 hours. Can the cake house manager conclude that the new packaging technique is efficient at 0.01 significance level?
A bank has the following data on the gender and marital status of 200 customers.What is the probability of finding a single female customer? Is marital status independent of gender? Explain using probabilities.
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