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Twelve different video games showing substance use were observed and the duration times of game play in seconds are listed below. The design of the study justifies the assumption taht the sample can be treated as a simple random sample. Use the data to construct a 95% confidence interval estimate and the mean duration of game play.
4055 3884 3859 4019 4319 4819 4654 4034 5005 4822 4341 4310
What is the confidence interval estimate of the poplulation mean?
round to one decimal place as needed.
What is the probability that a randomly selected from such a hen weighs more than 11.5 grams. What is the probability that the average of a random sample of 25 eggs from such hens will be less than 5.8 grams?
Compare and contrast random selection and random assignment. Be sure to include a discussion of when you would want to do one or the other and the possible consequences of failing to do random selection or random assignment in particular situation..
Assume that x has a normal distribution, with the specified mean and standard deviation. Find the indicated probabilities.
What are the requirements for applying the hypothesis test for the difference in two population proportions? What are the calculations (computations)?
suppose a study of 196 randomly sampled privately insured adults with incomes over 200 of the current poverty level is
Compute an estimate of the standard deviation of y when x = 8. Develop a 95% confidence interval for the expected value of y when x= 8.
Determine the least square trend equation. Estimate the number of employees in 2008. By how much the number of employees decreases (or increases) per year on the average?
A survey conducted by the American Automobile Association of 64 families of size four vacationing in Niagra Falls resulted in an average amount spent per day of $252.45. Assume the population standard deviation of amounts spent per day is estimate..
Is this a one or two tailed test? (b) What is the decision rule? (c) What is the value of the test statistic? (d) What is your decision regarding H0? (e) What is the p-value? Please show me your calculations. Interpret the results.
Show the sampling distribution of if a random sample of 150 insured individuals is used to estimate the proportion having received at least one ticket.
Conduct a hypothesis test to test that the population mean for population A is no greater than the population mean for B. Use the 0.08 significance level.
health studies indicate that 5 percent of the population of umen has a disease that is peculiar to that country. there
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