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1. Describe the "third variable problem" as it relates to correlation and provide an example of how you might see this played out in your own field.
2. How does hypothesis testing contribute to the scientific knowledge base? Now that you have a general understanding of hypothesis testing, provide an example of how you might implement this in your work.
Electronic baseball games manufactured by Tempco Electronics are shipped in lots of 25. Before shipping, a quality control inspector randomly selects a sample of 6 from each lot for testing. If sample contains any defective games, the entire lot i..
In a sample of 55 mice, a biologist found that 42% were able to run a maze in 30 second or less. Find the 90% limit for the population proportion of mice who can run a maze in 30 second or less.
Find out the upper and lower bounds on average life expectancy of the Canadian women such that at least 90% of all population is included.
How many adults must be randomly selected to estimate the mean driving time of Chicago commuters? We want 99% confidence that the sample mean is within 4 minutes of the population mean, and the population standard deviation is known to be 8 minute..
Find the probability between the given values for normal distribution.
A simple random sample of 100 of a certain popular model car in 2003 found that 20 had a certain minor defect in the brakes. A simple random sample of 400 of this model car in 2004 found that 50 had the minor defect in the brakes.
Suppose a research firm conducted a study to determine the average amount of money steady smokers spend on cigarettes during a week.
Find out the forecast value utilizing three month moving average method, weighted moving average method, exponential smoothing and regression methods.
In order to compare the mean charges for the three groups, the data will be subjected to an analysis of variance. Write the null hypothesis tested by the ANOVA.
What is the P-value of the test, assume the standard deviation is 3 years, a 95% confidence interval for the average time
Using the basic informaion from above: If there are no additional customers waiting (or walking up to the counter) when a particular customer begins her transaction, what is the probability that no one will be waiting in line when her transaction ..
What are the main drivers of uk banks' profitability? what are the implications of increased concentration in the uk banking market? what were the main recommendations of the cruickshank report and how did the industry respond?
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