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Based on data covering two consecutive school years, the National Safety Council found that fourth to sixth graders engaging in unorganized activities on school grounds experienced injuries at the rate of 2.4 injuries per 100 thousand student-days.
On the average, how many student-days elapse between injuries to fourth to sixth graders in unorganized activities at school, and what is the probability that the next such injury will occur before 45 thousand student-days have passed?
the national high school sports database reports that players of lacrosse average 55 goals per season. the standard
question consider the following record of sales for a product for the last 100 days. sales unitsnumber of days
Among 25 silver dollars struck in 1903 there are 15 from the Philadelphia mint, 7 from the New Orleans mint, and 3 from the San Francisco mint. If 5 of these silver dollars are picked at random, find the probabilities of getting
Summarize the similarities and differences in their performance so far.- The coach can take only one player to the state championship. Which one should she take? Why?
bi-lo appliance super-store has outlets in several large metropolitan areas in new england. the general sales manager
Carefully explain what the slope of the line means in this context.- How accurate do you expect predictions based on this model to be? Cite evidence from the regression analysis.
After calculating the sample size needed to estimate a population proportion to within 0.04, your statistics professor told you the maximum allowable error must be reduced to just .01. If the original calculation led to a sample size of 800, the s..
Willow brook School is a small, private school in the Midwest United States. As an independent systems analyst, you work as an IT consultant, specializing in developing IT solutions for small businesses. You have been contacted by the director, Vi..
An article in USA Today stated that "Internal surveys paid for by directory assistance providers show that even the most accurate companies give out wrong numbers 15% of the time."
the waiting time at a certain bank is approximately normally distributed with a mean of 3.7 min and a standard
Transformations of Data Assume that two-way ANOVA is used to analyze sample data consisting of more than one entry per cell. How are the ANOVA results affected in each of the following cases?
suppose that customers arrive at a banks atm at the exponentially distributed mean rate of 30 per hour. if a customer
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