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Using a computer, simulate the experiment of rolling a fair die n D 20 times. Perform your simulation 500 times, and count how many times you saw each of the six faces show up. Compare the theoretical value of the probability that each face will show up against your simualtion. (The theoretical value is an example in the text.)
Mauricio Cruz, a wine merchant for Cruz's Spirits Emporium, wants to determine if the average price of imported wine is less than the average price of domestic wine.
a random sample of the lifetime of 49 ultraillum light bulbs has a mean of 3960 hours and a standard deviation of 200
Identify the research question and generate the approriate hypothesis. Find the appropriate statistical test, compute the test statistics and draw conclusions.
The owner hypothesizes that his patrons have no preference for a particular court. He observes how many people play on each court on a particular day.
Construct a 99% confidence interval for the standard deviation, σ, of the replacement times of all washing machines of this type.
Solve the initial value problem y' = 2y + 3, y(0) = 2. The population p(t) of the South American Agouti satisfied the population law dp/dt = 0.05p - 450, where the factor 0.05 reflects the birth rate and the -450 is a constant harvest rate due to ..
Model Fitness. With any statistical model, we assess the fit: Does the model accurately depict the truth? Explain how one of the following helps assess the "fitness" of the mean.
Nyobia had a population of 3 million in 1985. Assume that this country's population is growing continuously at a 5% annual rate and that Nyobia absorbs 40000 newcomers every year.
considering that a researcher can test at the ltp .05 95 p .01 99 or p .001 99.9 level for statistical significance
Standard deviations for first- and second-time and confidence interval
a friend of mine is giving a dinner party. his current wine supply includes 8 bottles of zinfandel 12 of merlot and 11
suppose that the diameters of bearings are independently normally distributed random variables with mean1.005 and
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