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Oil Leaders
The table shows the world's five largest crude oil producing countries and their total oil output in percentage for the years 2011 and 2012.
Give two reasons why you should not do a chi-square test with these data.
A marketing agency is interested in the buying habits of those who shop online versus those who shop in person. In your discussion post, address each of the following and explain your reasoning as to why you picked the specific scale:
A subcommittee of four is chosen at random. What is the probability that all the ethnic groups are represented on the subcommittee?
Create a 95% confidence interval for the percentage of all auto accidents that involve teenage drivers. Explain what your interval means.
For a random sample of 35 items, a known population standard deviation of 23, and a sample mean of 211 estimate the: the population mean with a confidence level of 95%.
1. IA Credit Card Company wants to evaluate the usage of their card. They randomly selected 16 credit card holders and found that the mean amount they charged in the past twelve months was $2017, while the standard deviation was $867.
Let X be the number of yes votes obtained from a random sample of 200 out of the entire voting population. What is the expected value of X if, in fact, 65% of all voters supported the dictator?
can a test of significance chi-square show a statistically significant relationship while a measure of association
Directions: Use the real estate data you used for your Week 2 learning team assignment. Analyze the data and explain your answers. You are consulting for a large real estate firm. You have been asked to construct a model that can predict listing..
Give a 95% confidence interval for the mean bleeding time under pressure for the six persons and draw some conclusion as to whether pressure increases bleeding time.
Suppose a random sample of 10 American workers is selected. What is the probability that more than seven of them say job stress caused frequent health problems?
According to The Economist, the current office vacancy rate in San Jose, California, is 21%.14 An economist knows that this British publication.
Design an experiment using a staged manipulation to test the hypothesis that when people are in a good mood, they are more likely to contribute to a charitable cause. Include a manipulation check in your design.
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