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A study of the career paths of hotel general managers sent questionnaires to an SRS of 170 hotels belonging to major U.S. hotel chains. There were 109 responses. The average time these 109 general managers had spent with their current company was 11.3 years. Give a 99% confidence interval for the mean number of years general managers of major-chain hotels have spent with their current company. Take it as known that the standard deviation of time with the company for all general managers is 3.7 years.
Distributed with a mean of $150 and standard deviation of $25. About how many of the students spend less than $100 on books?
Determine if there is a linear correlation between annual income and the amount of insurance? What is the linear regression line for this data?
Using WSJ or IBD look up the following stocks: General Electric, General Motors, Microsoft and Intel and answer the following questions for each stock. You may have to refer to several issues of your newspaper for all of the information if the pap..
A senior accounting major at Midsouth State University has job offers from four CPA firms. To explore the offers further, she asked a sample of recent trainees how many months each worked for the firm before receiving a raise in salary.
Choose and compute the appropriate descriptive statistics to describe characteristics of the sample under study (such as sex distribution, age, and ethnicity).
A certain type of injury has tangible costs of $40,000 per occurrence and intangible costs of $150,000 per occurrence. Perform a cost/benefit analysis to weigh the benefits of the proposed safety glasses policy against its expected costs.
The standard deviation of the sample is 5. find the best point estimate of the mean. find the 95% condidence interval of the mean score for all golfers.
which is a value often used for the upper limit of the range of normal values. What do the results suggest about the sample group?
What is the probability of getting a perfect score if you were forced to guess at each question?
Population was computed to be 126.9 grams and the standard deviation was 1.20 grams. which food results in more uniform weight.
For the data giben below, prepare a R-chart. Note that the sample size is three.
Use the auxiliary variable approach to model this problem and write a short memo to the marketing manager explaining the solution and sensitivity information.
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