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Nine experts rated two brands of coffee in a? taste-testingexperiment. A rating on a 7-pointscale(1 equals = extremely unpleasing, 7 equals = extremely pleasing)is given for each of four? characteristics: taste,? aroma, richness, and acidity. The accompanying data table contains the ratings accumulated over all four characteristics. Complete parts? (a)through? (d)below.
A. At the 0.05 level of significance, is there an evidence of a different in the mean summated ratings between the two brands?
B. What assumptions is necessary about the population distribution in order to perform this test?
C. Determine the p-value and interpret its meaning.
D. Construct and use a 95% confidence interval estimate of the difference in the mean summated.
The numerators for the sample variance and population variance do not differ. SS is the numerator in both formulas; only the denominators differ.
In a recent year, business failures in the United States numbered 83,384, according to Dun & Bradstreet. The construction industry accounted for 10,867.
Listed below are the commissions earned ($000) last year by the sales representatives at the Furniture Patch, Inc.
Determine what the key term data refers to in the above example for Researcher A ? List two reasons why the data may differ?
Find that SAT scores correlate .45 with GPA for both Group X and Group Y. Would you conclude that the test was biased? Explain.
Make a model that predicts the average bank balance with all available independent variables (Age, Education, Income, Home value, and Wealth).
wetland ecologists often recommend including an island in the middle of wetlands to increase the retention time during
A beverage company has been running a television advertisement for a new energy drink. Market researchers conducted
What is the probability that all three will take the same escape route?- What is the probability that exactly one will take escape route E?
Among 500 marriage license applications chosen at random in a given year, there were 48 in which the woman was at least one year older than the man and among 400 marriage license applications chosen at random six years later, there were 68 in whic..
Define and identify the significance to public human resource management the terms/concepts/cases below:
Using the SPSS data file for Module 7 (located in Topic Materials), calculate a simultaneous multiple regression with SES, age, and optimism as the independent variables and longevity as the dependent variable.
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