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Question: Life expectancy. The data in the next column list the Life Expectancy for white males in the United States every decade during the last century (1 = 1900 to 1910, 2 = 1911 to 1920, etc.). Create a model to predict future increases in life expectancy. (National Vital Statistics Report)
Decade 1 2 3 4 5 6 7 8 9 10
Life exp. 48.6 54.4 59.7 62.1 66.5 67.4 68.0 70.7 72.7 74.9
Should the conclusions between the two tests consistent? Why or why not? If the conclusions are not consistent, which one would you agree with and why?
Given that a randomly selected member uses the tennis courts regularly, find the probability that they also use the golf course regularly.
families usa a monthly magazine that discusses issues related to health and health costs surveyed 19 of its
Coke cans: n=36, mean of values in sample = 12.19 oz., s= 0.11 oz. Test the claim that the mean equals 12 oz. Use a significance level of alpha = 0.02.
Construct a 94% confidence interval for the true percentage of smokers among all people who completed four years of college.
d. Compare the value of SSE for the least squares line to that of the two lines you found in part b. What principle of least squares is demonstrated by this comparison?
(a) Calculate the appropriate standard error required. (b) Calculate the respective z-score you would use to determine the probability that the sample mean grade will be less than 75.
Medical research team studied the ages of patient who had strokes caused by stress. Ages of 34 patients who suffered stress strokes. Create frequency distribution for these ages.
Find the test statistic value for two mean tests in large sample.
the state department of agriculture is trying to determine the average corn yield for farmers in the state. they take a
You are given the sample mean and the sample deviation, Use this information to construct the 90% and 95% confidence intervals for the population mean. Which interval is wider?
The Precision Scientific Instrument Company manufactures thermometers which are supposed to give readings of 0o C at the freezing point of water.
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