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If you know you need a sample size of 1,063 out of 300,000 to get a 95% confidence level and a 3% confidence interval what steps would you take to get a random sample?
Testing for population mean - warp-breaking specification of the manufacturer at the .05 level of significance?
How many commercials' worth of data do I need to have a margin of error no more than 3, the correct set of hypotheses
The random variable x is known to be uniformly distributed between 1.0 and 1.5.
Use the Poisson Distribution the indicated probabilities in one year, there were 116 homicide deaths in Richmond VA. For a randomly selected day
The sum of two numbers is less then 27. The second number is 7 less then the first. What are the possible values for the first and second number
Use RNG in Excel to generate n = 5 observations from the Normal distribution N(20, 5). Test H0: μ = 20 versus H0: μ ≠ 20 at the α = 0.05 level of significance. Repeat this process 100 times and then count the number of times that you reject H0.
Assume that the two samples are independent simple random samples selected from normally distributed populations. Do not assume that the population standard deviation are equal.
The standard deviation of the differences d for the paired sample data s d = ____________
If the confidence interval limits do not include age below 20 does it mean that motor cyclists under the age of 20 rarely die in crashes?
All welders in a factory begin as apprentices. Every year the performance of each apprentice is reviewed. Past records indicate that after each review, 10% of the apprentices are promoted to professional welder
Assuming that the manager's claim is correct, calculate the probability that 117 or fewer of 205 randomly selected marketing researchers would disapprove of the scenario.
The media often attempts to predict the outcome of national elections. Why are they often wrong? Based on the concepts presented in this module's readings, how could the system be improved?
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