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Define Hypothesis testing with one way ANOVA and Tukey's test. (1) 29 randomly selected subjects were exposed to commercials shown in more involving programs.
(2) 29 randomly selected subjects were exposed to commercials shown in less involving programs, and
(3) 29 randomly selected subjects watched commercials only
The mean brand recall scores for these three groups were, respectively, X1-bar = 1.21, X2-bar= 2.24, and X3-bar= 2.28. Furthermore, a one-way ANOVA of the data shows that SST = 21.40 and SSE = 85.56.
Perform pair wise comparisons of the treatment means by computing a Tukey simultaneous 95 percent confidence interval for each of the pair wise differences μ1 - μ2, μ2 - μ3, and μ2 - μ3. Which type of program content results in the worst mean brand recall score?
At 95% confidence using the p- value approach, test the hypotheses. Let α = 0.1.
Complete the test at the 5% level of significance.
For the data shown below, prepare a x-bar chart. Note that the sample size is three. Record the values for the UCL, center line, and LCL. In addition, note any points that are out of control.
Consider the continuous random variable X, which has a uniform distribution over the interval from 20 to 28. The probability that X will take on a value between 21 and 25 is.
Perform a chi-square test on the following data:
Any person who is familiar with these trees understand the height of a California redwood tree which is related to another characteristics of the tree.
Compare two month moving average also exponential smoothing using MAD. The subsiquent data represents demand for company ABC's products for the last 10 months.
If two independent large samples are taken from two populations, the sampling distribution of the difference between the two sample means:
Find the relative risk for moderate beer drinkers as compared to nondrinkers, finds the 95% confidence interval
The CEO of the business has nothing better to do wheras measured the temperatures of 26 department managers 1 to 4 times every day to get a total of 123 measurements.
A newspaper reports have 58 percent of farmers are planning to plant genetically modified crops presesnt year. The article adds that the poll is based on a random sample.
No estimate of the population proportion is available. How large a sample is required?
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