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Healthy living has always been an important goal for any society. In a recent ad campaign for Walt Disney, First Lady Michelle Obama shows parents and children that eating well and exercising can also be fun (USA Today, September 3 0 , 2010). Consider a regression model that conjectures that fruits and vegetables and regular exercising have a positive effect on health and smoking has a negative effect on health. The sample consists of the percentage of these variables observed in various states in the U.S in 2009. A portion of the data is shown below; the complete data set can be found on the text website, labeled Healthy Living. State Healthy (%) Fruits.
a. Estimate the model Healthy = β0 + β1 Fruits/Vegetables + β2Exercise + β3 Smoke + ε.
b. Analyze the data to determine if multicollinearity and heteroskedasticity are present.
The average highway travel time from Waterloo to Toronto on accident free days (i.e., only regular volume of traffic) is around 90 minutes with a standard deviation of 10 minutes. The occurrence of an accident, however, results in an average delay..
What is the proportion of people surveyed that rated the subway system from 3 to 4. What is the proportion of people surveyed rated the Subway System from 1 to 3.
Write a summary that includes only the ones that you have encountered previously and that you believe are effective in describing the data.
for each of the following parts indicate whether we would generally expect the performance of a flexible statistical
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you measure the lifetime of a random sample of 64 tires of a certain brand. the sample mean is x 50 months. suppose
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Create a research question in the field of psychology that you are interested in researching. Write questions clearly.
these cars would fall into the 22 to 27 mpg range? Compute the proportion of cars that get more than 28 mpg. What proportion of cars would get less than 23 mpg?
Time closely follows a normal distribution with a mean of 500 seconds and a standard deviation of 72 seconds. What percent of kiosk users take between 600 and 720 seconds?
q1. listed below is the net sales in million for home depot inc. and its subsidiaries from 1993 to 2004.yearnet
Test at the 0.05 level of significance whether the mean of a random sample of size n = 16 is "significantly less than 10" if the distribution from which the sample was taken is normal, = 8.4, and σ = 3.2. What are the null and alternative hypoth..
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