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Question: Planets (more or less). On August 24, 2006, the International Astronomical Union voted that Pluto is not a planet. Some members of the public have been reluctant to accept that decision. Let's look at some of the data. (We'll see more in the next chapter.) Is there any pattern to the locations of the planets? The table shows the average distance of each of the traditional nine planets from the sun.
a) Make a scatterplot and describe the association. (Remember: direction, form, and strength!)
b) Why would you not want to talk about the correlation between a planet s Position and Distance from the sun?
c) Make a scatterplot showing the logarithm of Distance vs. Position. What is better about this scatterplot?
Suppose that a random sample of 200 adults found that 110 thought there is too much violence on television. Is this enough evidence to reject the claim? What do we want to know?
Find the critical value (cutoff value) in a T-distribution for a 98% confidence level when the sample size is 20. Use a T-distribution table.
analyze the effect of the therapies
Using the 2% significance level, can you conclude that the average 10-week recycling volume of all households having 60-gallon containers is different.
suppose that 70 of eligible residents of phelps county will actually vote in an upcoming election. consider randomly
Given what you've learned in this module about the meaning of "statistics", choose one of the examples from Part I (A-F), and raise a relevant question of your own that could be answered by a statistician.
A researcher conducts an independent measures research study and obtains t= 2.070 with df= 28. How many individuals participated in the entire research study?
That is, P (X = x1|θ1) = 0.1 or P (X = x2|θ3) = 0.4, and so forth. Suppose you observe X1; what is the updated prior? What is the Bayes decision?
Bench Inc., an equipment manufacturer, leased a machine to Unicycle Company on January 1, 2014. The lease is for a 6-year period and requires equal annual payments of $41,747 at the beginning of each year.
the number of carbohydrates in grams per 8-ounce serving of yogurt for each of a random selection of brands is listed
The sameple you found that 114 of those adults sampled over the age of 24 smoke. Develop a 95% condience interval for the current porportion of adults over the age of 24 who smoke.
At the 0.005 level, evaluate the effectiveness of the new ball in increasing distance. Using the appropriate statistical table, what is the approximate p-value for this test?
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