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Public Health and Nutrition
William Soeltz, the food editor for The Boston Herald, conducted a study to examine the quality of wine (measured by age only) at local restaurants. Independent random samples of three types of wines (red, white, and rosé) were obtained from four exclusive restaurants (The Federalist, Top of the Hub, Capital Grille, and Azure). The age (in years) of each wine was recorded. Consider the following partial ANOVA summary table.
a. Complete the ANOVA table.
b. What was the total number of observations?
c. Conduct the hypothesis test for any effect due to interaction. Use a = 0.05. What does your conclusion imply about the other two hypothesis tests?
d. Conduct the hypothesis tests for factor effects. Use a = 0.05. State your conclusions.
A study of the amount of time it takes a mechanic to rebuild the transmission for a 1992 Chevrolet Cavalier shows that the mean is 8.4 hours and the standard deviation is 1.8 hours.
He remembers the mean but can't recall whether the standard deviation was 6 months, 6 years, or 16 years. Tell him which one it must have been, and why.
(a) What is the sample proportion ˆp of college students at OSU who worked last summer? (b) What is the approximate distribution of the proportion ˆp of college students at OSU who worked last summer?
a survey of 1305 people who took trips revealed that 96 of them included a visit to a theme park. based on those survey
The results of a statewide exam for assessing the mathematics skills of realtors were normally distributed with a mean score of 73 and a standard deviation of 11. The realtors who scored in the top 15% are to receive a special certificate, while t..
What is his dependent variable and independent variable and estimate a simple linear regression model and present the estimated linear equation. Interpret the coefficient estimates of the linear relationship.
The NY Dept of Motor Vehicles (DMV) designs its license plates with space for 7 letters or numerals. In the most recent iteration, the DMV uses three letters followed by 4 numbers.
let three fair coins be tossed. let a all heads of all tails b at least two heads and c at most two tails.1. list
a. How many of the employees would you expect to have voted for President Bush? b. All of the employees indicated that they voted in the 2004 presidential election. Determine the probability of this assuming they followed the national trend. c. Ei..
If the number of misprints in a chapter of his prob- ability book is Poisson distributed with mean 2 and if the number of misprints in his history chapter is Poisson distributed with mean 5, then assuming Sam is equally likely to choose either boo..
Make up an example where the population means in a 3-by-3 design have no interaction effect but main effects for both factors exists.
Calculate then explain/interpret the following 14 tasks/tests using the dependent variable (labeled Y)(Sales) and the independent variables (labeled X1 (Calls), X2 (Time), and X3(Years)). Attached is the excel Spreadsheet with the variables.
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