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Peggy wants to know if her pack of cookies was statistically different from those of the rest of the class. She found out the average number of chips per cookie this year was 13.82 and the standard deviation for the class was 7.25. She had a pack of 10 cookies which had an average of 9.8 chips per cookie.
Calculate the 95% confidence interval for these data.
Calculate the effect size, Cohen's d, for these data and interpret the result in complete sentences (e.g., "Small effect size." Is not acceptable; "The small effect size means that X is lower than Y but not sufficiently lower that it would require action," is better)
(a) Using Excel's ANOVA tool (With Replication), determine which factors are significant. (b) Draw the Mean Effects graphs to confirm that the interaction between alloy type and temperature is not significant.
Determine the maximum volume of the funnel
Engineers hoped to base their decision on re- actions of 50 drivers, but time and budget constraints may force them to cut back to 20. How would this influence the power of the test? Describe.
suppose we wish to know if there is a difference in choice of model based on comfort between population groups
The Confused Bricklayer Robot Problem - Draw a picture to illustrate the initial problem situation and how can you describe a possible solution?
Would you accept that day's production of concrete at the given level of confidence? Assume that, from past slump test results, the concrete slumps are known to be normally distributed.
1. For the period 1998-2008, McDonald's Corpora- tion paid the following dividends (rounded to nearest penny) per share of common stock. Source: McDonald's Corporation, 2005 Annual Report, p. 1; 2008 Annual Report, p. 19.
x the quality of the speed of executiony overall satisfaction with electronic trades provided the estimated regression
Discuss various types of two dimensional diagrams. Explain with Ex., how these are prepared? Distinguish between Natura.I scale and Ratio Scale What are the methods of constructing graphs on ratio scale?
IQ scores form a normal distribution with µ = 100 and σ = 15. Individuals with IQs above 140 are classified in the genius category. What proportion of the population consists of geniuses? Individuals between 90 and 110 are classified as average. W..
Do not forget to test for any applicable difference in means (Tukey implies).
a national grocers magazine reports the typical shopper spends six minutes in line waiting to check out. a sample of 16
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