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Calculate a value of lambda using the data from last week concerning the news networks and the reporting practices. Compare your resulting lambda to the resulting chi-square from last week. Do both statistics lead you to same conclusion regarding the association between the news networks and the reporting practices ?
A random variable has a standard deviation of 16, and an unknown mean. Find the lowest size of a simple random sample so that the sample mean estimates the population mean with a standard error no larger than 0.25.
Conduct a 3-period moving average, an exponential smoothing forecasting using an alpha of .25, and a seasonal forecast with 3 seasons.
Verify that this is valid density function. Find out probability that weight is smaller than 24 ounces.
Give null and alternative hypotheses for this test in symbolic form.
According to the study, the mean age of a self-employed individual is 46.6 years with a standard deviation of 10.8 years.
If we were to repeat an experiment a large number of times and calculate a statistic such as the mean for each experiment, the distribution of these experiments would be called?
Use the Empirical Rule to estimate the proportion of costs within two standard deviations of the mean. What are these limits?
Describe the types of probability -example of classical probability, empirical probability, or subjective probability.
In a survey conducted to see how long Americans keep their cars, 2000 automobile owners were asked how long they plan to keep their present cars. The results of the survey follow. Find out the probability distribution associated with these data.
At the .05 significance level, is the number of units produced on the afternoon shift larger?
Chi-square test for goodness of fit - difference in the use of the four entrances?
Suppose that past data are not available for developing a planning value for p; therefore, you will use p = 0.050 for the planning average.
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