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R for my statistics class and need to write the code for this problem: "An experiment with four treatments and five replications of each treatment, which requires 20 experimental units. How many randomizations are possible for this experiment?"
Using the 0.95 degree of confidence, what is the interval estimate for the population proportion (to the nearest tenth of a percent)?
Find the probability that an individual graduate will have a salary over $45,000. A group of nine graduates will have a group average over $45,000.
What is the probability that the project will be completed in 17 months or less?
Can researcher conclude that humidity has significant effect on eating behavior? Use two-tail test with α = .05. Calculate estimated Cohen's d and r2 to measure size of treatment effect.
11% needed to be serviced once, 5% twice, 4% three times, and none required more than three repairs. what are the expected no of repairs per year.
At.05 significance level is it reasonable to conclude that it takes longer to determination software issues? Determine the p-value?
Explain why the polls that are so frequently quoted during early returns on Election Day TV coverage are an example of cluster sampling.
Let's work with a really idealized normal distribution. We'll pretend that American 12-year-old boys have an average (mean) weight of 100 lbs.
What is a discrete random variable and how does it differ from a continuous random variable? Give examples.
In answering this questions, set up and test appropriate hypotheses using D = 0.01. Construct a 99 percent confidence interval on the true mean difference in breaking strength.
Certain tubes manufactured by a company have a mean life of 800 hours and standard deviation of 60 hours. Find the probability that a random sample of 16 tubes taken from the group will have a mean life of?
What is the probability the Time/CNN poll will provide a sample proportion within plus-or-minus 0.02 of the population proportion?
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