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The majority of the data is basically distributed if there are enough subjects. For instance, if you collected test scores of only a few honor students, the data will most likely not be normally distributed because you would have a sample that did not represent the entire population. But the identical test scores (for honor students) collected from all schools in a state will result in a normal distribution.
Identify an example of a population that you would expect to be normally distributed. Explain why, according to you, it would be normally distributed. Then, describe a subset of the population you identified and explain why it would not be normally distributed and what would the distribution look like.
Is it sensible to conclude that this set of n=16 people is not representative random sample of registered voters?
Construct a 95 percent confidence interval for the true mean.
See if there is a difference in their means and variances.
Entities arrive at single-server queuing system at average of 4 per hour and server can service average of 5 per hour. Mean in the queue is?
Calculate correlation coefficient for these sample data.
Privacy Are your finances, buying habits, medical records, and phone calls really private? A real concern for many adults is that computers and Internet are reducing privacy. A survey conducted by Peter D.
Use a scatter plot to determine the relationship between the x values and the y values.
Give critical test statistic and compute sample test statistic. Test null hypothesis at alpha level .01.
What is the value of the test statistic? (Negative amount should be indicated by a minus sign. Round your answer to 2 decimal places.)
Solve the problem: According to police sources a car with a certain protection system will be recovered 94% of the time. Find the probability that 4 of 8 stolen cars will be recovered.
All else being equal, what occurs to your confidence interval when you increase value of alpha?
What are the mean and the standard deviations for the population of produced with this process?
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