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Over the 48 years from 1950 through 1997, the stock market has gone up in the month of January for 31 times; it has gone up for the whole year for 36 times, and it has gone up both for the year and in January for 29 times.
1) Based on historical data, what is the probability the stock market will go up in January?
2) Based on historical data, what is the probability the stock market will go up for the whole year?
3) What is the conditional probability that the stock market wil go up for the year given the stock market has already gone up in the month of January?
4) Are the stock market's January performance and its annual performance independent events? What is the meaning of this conclusion to a financial analyst? Please use statistical analysis (not simple verbal narration!) to justify your answer.
What is the appropriate inferential statistical test for the case scenario? Why?
There are three versions of a board game released - version 1, version 2, and version 3. The versions are distributed equally and evenly among all potential sellers of board games.
The issue of how much should be spent to solve particular U.S. social problems is a complex matter, and people have diverse and conflicting ideas on these issues.
Which statement is true for a statistical study?
Test for significant differences among weight losses for the five diets, and perform all pair wise comparisons using:
Archaeopteryx is an extinct beast having feathers like a bird but teeth and a long bony tail like a reptile. Five fossil specimens have preserved both the femur and humerus bones. The measurements (in centimeters) for each bone are given below.
Do time series models rely heavily on cause and effect relationships between variables in order to ensure accurate predictions?
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.
Pierre has a utility function for total asset position of u(x)=ln(x), His assets currently consist of $50,000 in cash and a rare violin he inherited from a rich uncle which is valued at $100,000.
(a) Compute the arithmetic mean of the subscribers' incomes. (b) Compute the modal and median incomes.
What statistical test did the researchers use to determine if there was a statistically significant difference in levels of self-esteem between the boys and the girls?
Suppose among 312 large city residents sampled, 65 refused to cooperate. What is the margin of error at the 95% confidence level.
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