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A report on television shows a graph to accompany a story that the percentage of people in your city who vote in state elections has declined substantially over the past few years. As a civic-minded citizen, you are disappointed by the report. Then you notice that the scale on the vertical axis ranges from 36% to 38%. Might this affect your reaction to the story? Explain your reasoning.?
You see a graph where the vertical scale begins with a large number rather than zero. Explain why this should always give you reason to be suspicious.?
For some linear relationships, doubling the independent variable results in doubling the function value. For example, doubling the number of steps in a staircase doubles the height of the staircase. Does this doubling property hold for every linear relationship? If so, explain why. If not, give an example of a linear function for which this property does not hold. Try to determine all linear functions for which this property holds.
a) What is the coefficient of variation? Comment on this value. b) What is the probability of a day 's return being greater than 0.000022? c) What is the probability of a day 's return being less than 0?
In Exploratory Factor Analysis, how do you interpret the factor loadings? Meaning, how do you know how many and which loadings are of particular interest?
billys bank is the only bank in a small town in arkansas. on a typical friday an average of 10 customers per hour
(a) What is the daily demand rate? (b) What is the optimal production quantity?
Solve using the Traditional Method. Find the p-value for your test statistic.
Find/discover an example of statistics in the news to discuss the following statement that represents one of the objectives of statistics analysis: "Statistics helps us make decisions based on data analysis.
Can we infer from these data that there is a positive linear relationship between the value of the fund and the price of gold - Mutual funds minimize risk by diversifying investments they make.
Of the companies surveyed, only 8 complete and return the questionnaire. Given this scenario, identify possible sources of sampling error, response error, and nonresponse error.
two parts are assembled. the distributions of x1 and x2 are normal with micro1 20 s1 0.3 and micro2 19.6 s2 0.4.
James is expecting three checks in the mail, for $20, $26, and $33 dollars. Their arrivals are the events A, B, C. Assume the class is independent.
The data is shown on the table. Is there a difference in mean SBP between treatments? Run the appropriate test at α= 0.05
Population standard deviation of 5 and you select a sample size of 100, what is the probability that the sample mean is between 47 and 49.5?
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