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Question: Drunk driving 2005. Accidents involving drunk drivers account for about 40% of all deaths on the nation's highways. The table tracks the number of alcohol-related fatalities for 24 years. (www.madd.org)
a) Create a stem-and-leaf display or a histogram of these data.
b) Create a time plot.
c) Using features apparent in the stem-and-leaf display (or histogram) and the time plot, write a few sentences about deaths caused by drunk driving.
Will you reject your null hypothesis that all population means are equal or will you not reject? Choose the best answer from the options below.
Estimate a multiple regression model between the quantity sold and the explanatory variables in columns and Is there evidence of any violations
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Test the appropriate hypothesis by comparing with a critical value using o: = 0.05, and explain what your results mean. Compute the p-value for the test in part (a) and use it to perform the hypothesis test.
The 2009 National Assessment of Educational Progress (NAEP) gave a mathematics test to a random sample of eighth-graders in Texas. The mean score was 287 out of 500. To give a confidence interval for the mean score of all Texas eighth-graders, you..
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