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A regional director responsible for business development in the state of Pennsylvania is concerned about the number of small business failures. If the mean number of small business failures per month is 10, what is the probability that exactly four small businesses will fail during a given month? Assume that the probability of a failure is the same for any two months and that the occurrence or nonoccurrence of a failure in any month is independent of failures in any other month.
computing the expected values for the given probability distribution.find the expected values of the following
Determine the probability that adult owns stock and has some college education? Determine the probability that adult owns stock or has some college education?
Mean, Median and Mode and advise her on the best price range for her bouquets and Range and Standard Deviation.
Pepsi wanted to test to determine if the males preferred Pepsi more than the females. (a) PConduct the appropriate test and describe the results (ick your own alpha value)
If the random sample of 16 men does result in a mean score of 590 is there strong evidence to support the claim that the course is actually effective? why or why not?
he life expectancy of a brand of hair dryer is normally distributed wiht a mean of four years and a standard deviation of 8 months.
Standard deviation of 23.8 days. What is the 90% confidence interval for the average days worked by employees in all payroll departments?
Test the claim by random sampling 60 hgh school boys. Researcher found 54 boys have a cell phone at a = 0.01. Should the claim be rejected?
Compute the value of t. What is your decision regarding the null hypothesis? Briefly summarize your results.
Shopping time: House wares. How much customers buy is a direct result of how much time they spend in a store. The mean shopping time for women accompanied by children in national house wares stores is 7.3 minutes.
Job Interviews: Based on information from MRINetwork, some job applicants are required to have several interviews before a decision is made. The number of required interviews and the corresponding probabilities are: 1 (0.09); 2 (0-31); (0.37); 4 (..
Under what circumatances do you use a one-sided confidence interval instead of a 2 sided confidence interval?
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