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The mena height for a population of peole is 65 inches. Suppose that you pick a sample of 50 people and determine the sample mena. x you then repeat this procedure three more times. you learned in class that u_x = u can you conclude that the mean of the four sample mean will be equal to the population mean, 65? why or why not?
A financial institution transfers a large data faile every evening from offices around the world to its San Antonio headquarters. Once the file is received, it must be cleaned and partitioned before being stored in the company's data warehouse.
Write up your results by using scientifically recognized form.
Internet is 13.4 hours per week, with the sample standard deviation of 6.8 hours. Determine the 95 percent confidence interval for mean time Wired subscribers spend on Internet.
Of those female students, 85% of them will graduate, whereas 90% of males will successfully complete the same programme. If a new TESL student is chosen at random, what is the probability that: They graduate and they are female?
A recent study of 25 students showed that they spent an average of $18.53 for gasoline per week. the standard deviation of the sample was $3.00. find the 95% confidence interval of the true mean.
The daily revenue totals for the next 30 days will be monitored. What is the probability what the mean daily revenue for the next 30 days will exceed $7500?
The average credit card debt for college seniors is $3,262. If the debt is normally distributed with a standard deviation of $400, find probabilities. that the senior owes at least $1,000
Random samples of five hundred units that were selected daily from a manufacturing process produced an overall defective rate of 3.5%. Calculate the lower and upper control limits for a percentage control chart.
Compute the two groups using Paired sample t-test. Compute which modification reduced the number of traffic accidents
Please explain the term analysis variance so a person without formal statistics education can understand.
Customers surveyed used electricity to heat their homes. If the company wishes to be 99% confident to within 3%, how large a sample would be needed?
The mean of a normal probability distribution is 60; the standard deviation is 5.
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