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A regional director responsible for business development in the state of pennsylvania is cocerned about the number of small business failures. If the mean of small businsses failures per month is 10, what is the probability that exactly four small businesses will fail during a given month? Assume that the probablity of a failure is any month is independent of failures in any other month.
What is the probability that the first and the last ones on the EP are the relationship songs?
Insurance policy from company A costs $300 a year but guarantees to replace any losses due to theft. Create the decision tree.
How large sample should be selected in order to obtain p estimate with a bound of 0.08 on the error of estimation.
If the sample consists of n = 15 individuals, then compute df value for the t statistic?
The chi-square goodness of fit test can be used when we:
Probability using normal distribution.Sampling distributions. Given a normal distribution with μ = 50 and standard deviation σ = 9, if a sample of n = 100 is selected.
Determine the probability that at most 4 fish will be killed?
Develop a probability for the number of students in the sample who watch soap operas.
If there are 5 choices for a question and there is a 50% chance that the student knows the answer, what is the probability that the student knew the answer to a question he correctly answered?
The hypothesis is to be tested at the 5% level of significance. The critical value from the table equals:
A radio station wants to know if residents in their area are in favor of a proposed tax increase. They invite listeners to call in to respond to the poll. 645 of the 800 who responded were against the tax.
Suppose also that the mean score on test A is 85, and the standard deviation is 10; the mean score on test B is 90, and the standard deviation is 16; the scores on the two tests have a bivariate normal distribution; and the correlation of the two ..
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