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A brief description of the research article you selected and a brief summation of the sections on methods and results. Explain how the margin of error is reported in the article, and how and why the margin of error impacts the results of the study.
A production process is known to produce a particular item in such a way that 5 percent of these are defective. If two items are randomly selected as they come off the production line
A pollster calls 500 randomly selected people and all 500 respond to her first question. Because the subjects agreed to respond, is the sample a voluntary response sample?
The auto parts department of an automotive dealership sends out an average of 8 special orders daily. The number of special orders is assumed to follow a Poisson distribution.
Identify all the averages (mean, median, or mode) that can be used to summarize the outstanding balance on each account.
The article can be on Descriptive Statistics, Probability and the Normal Distribution, Sampling and Sampling Distributions, Regression Analysis, or Time Series Forecasting.
The 99% confidence interval using a t-distribution is ( ), ( ). Round to one decimal place as needed
Develop the opportunitiy loss table and compute the expected opportunity loss for each product. Determine how much the firm would be willing to pay to a market research firm to gain better information about future market conditions.
PTC is a substance that has a strong bitter taste for some people and is tasteless for others. The ability to taste PTC is inherited. About 75% of Italians can taste PTC
Their probabilities for success on a single play are p for A and q for B, and successive plays are independent. Determine the probablity that A wins the contest given A plays first.
Gerald takes the ACT Assessment mathematics test and scores 27. ACT math scores for 2007 were Normally distributed with mean 21.0 and standard deviation 5.1. What is Eleanor's standardized score?
Suppose you have drawn a simple random sample of 400 business executives. In this sample, 150 executives owned Blackberries.
Now they need your help to determine if the mean number of news shows watched in your neighborhood is similar to the national mean.
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