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Find two articles (newspaper, internet, magazine, academic resource, etc...) that use statistics to present some kind of argument or opinion . For each article, write a short, one-page analysis that addresses the following topics:
1. A brief overview of the article and the argument that it presents.
2. The kinds of statistical methods that were used to formulate the author's argument.
3. A personal opinion as to whether the statistics used are appropriate and whether or not the statistics are biased (i.e. do you think the statistics in the article are an accurate representation of the topic that is being studied?) Explain your reasoning.
Obtain a test statistic and p-value. Interpret the results at = .01.
Use an alpha level of .01 and test the hypothesis that the two methods are producing the same mean.
Determine the 95% confidence interval for your estimate what data have you utilized as the basis of your predictions what suppositions have you made.
Would it be appropriate to say the coefficient of determination (R-squared) is the proportion of variation in Y due to the variation within each of the categories of X?
Survey on What do you think is the biggest problem facing education today. One problem with exit polls may be that the wrong "key precincts" were chosen.
Construct a 99% confidence interval for the proportion of customers favoring underground installation.
This test result prompts a state administrator to declare that the mean score for the sate's eighth graders on the examination is more than 275. at a=.04, is there enough evidence to support the claim.
At the 5% level of significance, does this result support the conjecture?
Supposing a linear relationship, use the least squares method to find the regression coefficients b 0 and b 1 .
Use the population standard deviation along with the sample mean, S, and find a 92% confidence interval for the population mean. Is the true population mean contained in this interval?
At a large commercial bakery, one of the measures familiar with evaluate employees is the number of broken cookies per 1000 produced. The quality control department wants to determine if there is a relationship between years of experience and bro..
Probability histogran curve of percentage of (P)z
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