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Develop the hypothesis for a 3x3 factorial design (ANOVA). The experiment revolves around the effect of music and chocolate on words remembered. The first IV is the effect of music with 3 conditions. No music, Classical Music and no music. The second IV has 3 conditions of chocolate, no chocolate, milk chocolate, and dark chocolate. These are the main effects.
There is the interaction effect of Music and chocolate combined. Would I state my hypothesis to be H1: Music will have the highest amount of words remembered. H2: Chocolate will have the highest amount of words remembered and H1x2 Music and Chocolate will have the highest amount of words remembered? Or should my Hypothesis be directional such as H1: Classical music and Dark chocolate will have the highest words remembered. H2: Pop Music and Dark chocolate will have the next to the highest words remembered. And H3 Classical Music and Milk chocolate will rank third in the highest amount of words remembered. Please help!
Suppose there are two samples of size 6 and 7, with a rank sum of 58 in the sample of size 6. Using the Wilcox on rank-sum test, evaluate the significance of the results, assuming there are no ties.
Evaluate the regression assumptions of linearity and homoscedasticity by assessing your new residual plot. Be specific about your evaluation
Heights of Presidents. With a height of 67 in., William McKinley was the shortest president of the past century. The presidents of the past century have a mean height of 71.5 in. and a standard deviation of 2.1 in.
The NAEP test was also given to a sample of 1077 women of ages 21 to 25 years. Their mean quantitative score was 275. Take it as known that the standard deviation of all individual scores is = 60.
Print Media Advertising (PMA) has been given a contract to market Buzz Cola via newspaper ads in a major southern newspaper. Full-page ads in the weekday editions (Monday through Saturday) cost $2000, whereas on Sunday a full-page ad costs $8000.
The tail probabilities given above be affected if the > signs in the inequalities were replaced by ? Explain briefly. Why are the absolute value signs used in the two-tail probability expressions above?
A sample of 64 account balances from a credit card company showed an average balance of $1,040. A previously determined population standard deviation is $200.
For the data, F=0.46 and the P-value equals 0.63. What can you conclude? d. What were the assumptions on which ANOVA was based? Which assumption is the most important?
A survey dating back to the 1990's suggested that Americans anticipated a reduction in living standards and that a steadily increasing consumption no longer might be as important as it was in the past. (Were they right?)
If a time series is stationary without a linear trend or the seasonal component, which of the following forecasting methods may be suitable.
Let x be a random variable that represents a test score. What is the lowest score that would still place a student in the top 40% of the scores?
A professor is targeting a score of 80 on an exam. His forty-nine students averaged 78 on an exam with s = 7. Are the scores significantly less than 80 at a significance level of 0.05? Show your work and state the conclusion.
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