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A random sample of 25 people employed by the florida state authority established they earned an average wage( including benefits ) of $65.00 per hour
a. what is the popular mean? what is the best estimate of the population mean ?
b.develop a 99% confidence interval for the population mean wage ( including benefits ) for this employees
c. how large a sample is needed to assess the population mean with an allowable error of $ 1.00 and 95% confidence?
Movie Budgets. How does the cost of a movie depend on its length? Data on the cost (millions of dollars) and the running time (minutes) for 29 films of 2005 are provided in the SPSS data set called Movie_budgets.sav (found on your class site..
As a rule of thumb a line is considered as a transmission line if the length of the line is greater than one-sixteenth of the wavelength of the electromagnetic wave. Based on this rule of thumb
the electric power consumed each month by a chemical plant is thought to be related to the average ambient temperature
The lengths of Chinese giant salamanders can be modeled by a normal distribution with a mean of 113 cm and a standard deviation of 22 cm. 1. What percent of the Chinese giant salamanders do you expect to measure between 100 and 135 cm?
Sixty percent of the families in a certain community own their own car, thirty percent own their own homes, and twenty percent own both their own home and own car. If a family in the community is randomly chosen, what is the probability that they own..
Estimate the difference between the proportion of the population of low birth weight children and the proportion of the population of normal birth weight children who graduate from high school. Report a standard error for your estimate.
Please read through the case scenario shown below to gain an understanding of the background information and the research study
How many people were polled?
The symmetric approximation and Monte Carlo risk approaches
A sample of 9 production managers with over 15 years of experience has an average salary of $71,000 and a sample standard deviation of $18,000.
starbucks coffee co. uses a data-based approach to improving the quality and customer satisfaction of its products.
Derive the expression for the PDF of X
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