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In this blog entry (provided by a data consulting agency) examples are given for applying the Chi-Square test of independence to business examples in particular. - https://www.simafore.com/blog/bid/54594/How-to-use-Chi-Square-test-for-3-common-business-analytics-problems. Please discuss an example where you would find the technique useful in investigating a relationship of two variables.
Indicate which of the following responses below is correct. Discuss why it is correct or discuss why standard deviation is such a valuable statistic in so many situations.
Far separated sample means + differences of sample means are large compared to their internal (within) variability! Which of the following examples indicate group diff"s are "large"?
since 2000 the toyota camry honda accord and ford taurus have been the three best selling passenger cars in the united
Suppose that the resistance to break of a rope, in pounds, is equally distributed with an average of 100 pounds and a standard deviation of 16. What is the probability that said rope breaks with a force over 132 pounds?
If we generate 2,000 sets of 20 two-digit numbers, how can the outcomes of this simulation be used to approximate the probability of obtaining at least 15 positive results in the 20 runnings of the screening test?
Of primary interest is whether either active medication is different from a placebo. Give a 95% confidence interval of each treatment's effect.
As part of an opinion survey, a simple random sample of 1,500 families is chosen. What is the chance that between 9% and 11% of the sample families will not own cars?
Identify the type of sampling (random, systematic, convenience, stratified, cluster) used when a sample of people who smoke is obtained as described below.
In a large population of college-educated adults, the mean IQ is 118 with a standard deviation of 20. What is the probability that a randomly selected adult from this population has an IQ that is greater than 120?
Is the slope coefficient in the linear regression model between temperature and fuel consumption statistically significant at alpha=.05 and 0.01? How do you know? Show your test.
1.an inventor claims that a device increases gas mileage by 4. a test of the device was done by randomly selecting 10
The repeated-measures analysis of variance can be viewed as a two-stage process. What is the purpose for the second stage? Compare the repeated-measures analysis of variance with the regular ANOVA.
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