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To determine the public's opinion of the police department, the police chief obtains a cluster sample of 15 census tracts within his jurisdiction and samples all households in the randomly selected tracts. Uniformed police officers go door to door to conduct the survey.
Based on this sample information find out what percent of variation in starting salaries is described by GPA, and find out the equation that would forecast salary from GPA. Give a scatter plot.
Then describe trade-offs which will happen when you lower sample to $10,000 to meet their budget.
Suppose you were a manager of a business. You can only pick on method to solve the LP problems, which method would you choose and Why?
Findout the 98% confidence interval for true mean. Findout a 98% confidence interval for the cigarette tax in all 50 states.
A small New England college has a total of 400 students.The Math SAT is required for admission, and the mean score of all 400 students is 620. The population standard deviation is found to be 60. The formula for a 95% confidence interval yields th..
Find out the expected number of correct responses under these circumstances if one in fact selects the responses at random. What is the standard deviation?
The standard deviation is estimated to be 0.279. Use the 99% level of confidence.
In exercise identify (a) sample and (b) population. Also, find whether sample is likely to be representative of population.
Construct a 95% confidence interval estimate for the population proportion of adults who report that e-mails are easy to misinterpret.
Conduct a 3-period moving average, an exponential smoothing forecasting using an alpha of .25, and a seasonal forecast with 3 seasons.
High levels of cockpit noise in an aircraft can damage the hearing of pilots who are exposed to this hazard for many hours
If p denotes the p -value of the corresponding hypothesis test, which of the following is true?
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