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In 2005 San francisco bay times reported on a poll in new Zealand that found that new zealanders oppose the nations new gay inclusive civil unions law by a 3-1 margin. This poll was a call in poll tht cost $1. San francisco also reported that a scientific polling organization found that new zealanders favor the law by a margin of 56.4% to 39.3%. Explain why the two polls can give such widely differing results and which poll is likely to be more reliable.
Give an example of a problem (business, political, scientific) in which ANOVA analysis would be appropriate. (Hint: the dependent variable is categorical, such as male vs. female or comparing three different types of fertilizer.)
Using ANOVA summary table, find out if regression model is significant.
For each problem, compute a Welch F-statistic and determine whether or not significant differences exist among the treatment conditions.
Determine a 95% confidence interval for the true mean weight of such boxes?
Calculate the paired sample t statistic for these mood scores and How has the relation between the mean and the median changed? What does this suggest about the distribution of the transformed data?
Research question: Are mean crash damages same for these 3 vehicles? Crash1 Crash Damage ($).
Determine the probability of randomly selecting a person graduating with Master's degree who didn't major in Education.
Find the probability that he will answer all 10 questions correctly.
Illustrate what was the lowest score earned on the exam. Explain how many students scored within 3 standard deviations of the mean.
Assume gasoline prices for a region are normally distributed. do the data you obtain provide enough evidence to reject the claim? use 1% level of significance.
A certain model of remote-control Stanley garage door opener has nine binary (off/on) switches. The homeowner can set any code sequence.
Woodco manufactures tables and chairs. Each table and chair must be made entirely out of oak or entirely out of pine. A total of 150 board feet of oak and 210 board feet of pine are available.
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