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Create histograms for both frequencies, showing values on top of the bars, and the correct annotation on both axes. In particular, be sure that the x-axis is properly labelled.
Evaluate your histograms for any outliers in your data. Based on your evaluation of outliers, you may trim no more than 1% of the data contained in the data set. This must be done symmetrically (i.e., trimming no more than 0.5% off the top and 0.5% off the bottom).
Reproduce the histograms with the data points that remain after you have completed your trimming. Analyse the mean, median, and standard deviation of the trimmed data. What change did the trimming make in these measures?
All the rest of the calculations for this portion of the project should be completed with this trimmed data.
If standard deviation is 50 hours and α is equal to 0.01, what values for mean x will result in rejection of null hypothesis.
Assume that the number of left-handers is a binomial random variable. (Refer to the formula for mean and standard deviation for binomial prob. Distribution)
What kind of statistical test best did you use?
An experiment was performed to investigate lifetime of a component exposed to high heat. Three different oven types were used at either 550°F or 600°F.
What is the distribution of sample means.
What are the odds against drawing a card from an ordinary deck of cards and getting a spade?
how many individuals will I need to sample if I want a 95% margin of error to be no more than 3%, I want to know if the results are significant at = 10%. With the information given.
When using the distribution of sample means to estimate the population mean, what is the benefit of using larger sample sizes?
A company tracked the number of complaints it received during the first 6 months of last year, as shown in the following table:
Using quadratic regression model find the estimated number of planes.
A restaurant monitors its customer's complaints, With information, which of the following is a Pareto chart of the data?
A researcher is interested in whether social assertiveness might be influenced by training procedures. Two groups of college sophomores are randomly selected. Group A subjects are assigned to the "training sessions" and Group B subjects do not rec..
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