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The teacher ratio is 1:25. currently, the school district has 3,150 students. if the student enrollment increases by 20%, how many additonal teachers must be hired to reduc ethe teacher-student ratio to 1:18?
In a regression analysis, the sum of the squared deviations between y and y-bar is SST = 200.0. If the sum of the squared deviations about the regression line is SSE + 40.0, what is the coefficient of determination?
Draw the graph of the regression line on the same plot as the scatter diagram above.
How much net revenue does the state expect, on average from each ticket? What is the risk preference of people who play this lottery?
Compare among expected monetary approach also expected utility approach. Sketch the brokers utility curve and describe what it says about her risk profile.
Use the graph of f(x)= x^ to match the function to its corresponding graph. In words describe the transformation that occurs (ex: The graph of f(x) is shifted 6 units to the left).
Fix-It Copiers advertises mean time of 100 minutes for office calls with standard deviation of 25 minutes. What percentages of calls are completed?
Estimate the factor eeffects. Construct a normal probability plot of these eects. Which eeffects appear large?
According to Chebyshev's Theorem, how many students scored between 57 and 93? Assume that the distribution is normal. Based on the Empirical Rule, how many students scored between 57 and 93?
The Multiple Regression file has already been pre-loaded with the data, so you need only interpret the output. Complete the following tasks: State the multiple regression equation.
Find the probability that a randomly selected x-value from the distribution is in the given interval. Between 29 and 37.
Evette has 41 1/2ft. of string. She wants to cut it into pieces 3 3/4ft. long. How many pieces of string will she have? how much string remains, if any?
Using data table given below, find out the range and median?
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