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The average hourly workweek varies from country to country for industrial workers. In 2009 the most recent figures available were: Brazil, 43.9; Canada, 38.5; Finland, 37.7; India, 46.8; Japan, 38.7; Korea, 45.4; Mexico, 45.5; United Kingdom, 40.9; United States, 41.2.
What kind of graph is appropriate for these data? Create a graph and execute it.
Were the frequency distributions used effectively to report the results? Why or why not? Find an example of a presentation of statistics using a frequency distribution(s) from any media source.
find the probability that a data value picked at random from a normally distributed population will have a standard
Figure 2.8. A solution to the eight-queens puzzle. The ``eight-queens puzzle&; asks how to place eight queens on a chessboard so that no queen is in check from any other (i.e., no two queens are in the same row, column, or diagonal). One possible ..
the computer-science aptitude score x and the achievement score y measured by a comprehensive final were measured for
In a regression model involving 30 observations, the following estimated regression equation was obtained:
discuss what satisfying assumption 1-3 for regression inferences by the variables under consideration would mean. an
Is there a method which is accepted across industries for determining the minimum size of valid sample? N>50 +(8m aka 8 times the number of independent variables)
1. A. What the mean and standard deviation (SD) of the Close column in your data set? B. If a person bought 1 share of Google stock within the last year, what is the probability that the stock on that day closed at less than the mean for that year..
a population proportion is to be estimated. estimate the minimum sample size needed to achieve the specified margin of
A chemical company produces two chemicals, denoted by 0 and 1, and only one can be produced at a time. Each month a decision is made as to which chemical to produce that month.
In a random sample of 12 adults from the U.S., the mean waste recycled per person per day was 1.4 pounds with a sample standard deviation of .3 pounds. Assume that the distribution of x = waste recycled per person per day is normal.
Assume that company A makes 80% of all electrocardiograph machines, company B make 15% of them, and the company C makes the other 5%.
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