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Out of a random sample of 4770 healthy girls and women in Taiwan, 2934 tested positive for antibodies of rubella in a study published in 1993. Find a 95% confidence interval for the percentage of girls and women in Taiwan who had antibodies at that time.
Explain the logic of what you have done, writing as if you are speaking to someone who has never heard of correlation (but who does understand the mean, deviation scores, and hypothesis testing);
Using the .10 level of significance, can we conclude that the assembly time using the new method is faster?
Determine regression equation. Use assets as independent variables. For fund with $400.0 million in sales, determineut five-year rate of return (in percent).
Suppose U is a Unit (25, 50) random variable.Find the CDF of U and sketch a graph.
Find out the suitable critical value(s) for this situation given a 0.05 significance level. Find out/compute the value of sample test statistic.
To develop 3-month and 2-month moving average for the time series.The following data represents demand for company ABC's products for the last 10 months.
Suppose the population is normally distributed they make a decision to do a hypothesis test.
At the .01 significance level, can we conclude that the 30-yeer mortgage rate for small banks is less than 6 percent? Estimate the p -value.
Research question: Are the mean crash damages the same for these three vehicles?
By using standard normal table, determine critical value (or values) for= 0.14 right-tailed test.
Using the EMV criteria (you wish to maximize expected profits in this case) determine what course of action that Optel should take. Make sure to state the best strategy in words.
Suppose there is no cyclical component. Quarterly billing for water usage is shown below describe summer billing for year 5.
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