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You are using exponential smoothing to obtain monthly forecasts of the sales of a certain product. The forecast for last month was 2,083, and then the actual sales turned out to be 1,973. Obtain the forecast for next month for each of the following values of the smoothing constant: α = 0.1, 0.3, 0.5.
Draw a scatter diagram of the following bivariate data.
For 2000 patients,blood-clotting time was normally distributed with a mean of 8 seconds and a standard deviation of 3 seconds.what percent was blood-clotting times between 5 and 11 seconds?
Describe a where you might want to use a dummy variable in a multiple regression. What would the dummy variable buy you in that situation?
Of these, 36 are seniors, 30 are chemistry majors, and 8 are neither. A student is selected at random from the class. What is the probability that the student is both a senior and a chemistry major?
He randomly samples 45 oil wells throughout the United States and determines the mean output to be 10.7 barrels per day with a standard deviation of 1.3 barrels. Test the researcher's claim at the .025 level of significance.
If the Sum of Squares for Treatments (SST) is 10% of SS(Total), and the Sum of Squares for Blocks (SSB) is 20% of SS (Total), find the F values for this experiment.
a hockey team has 6 forwards 4 defensemen and 2 goalies. at any time 3 forwards 2 defensemen and 1 goalie can be on the
Construct a 90 percent confidence interval for the proportion of all kernels that would not pop.
Suppose that you want to set up a statistical test to challenge the claim of 6.7 seconds. What would you use for the null hypothesis?
Using the attached file, Activity 8.sav, perform a MANOVA. Group is the fixed factor and LDL and HDL are the dependent variables. Please include Multivariate Tests, Tests of Between-Subjects Effects, Parameter Estimates, Estimated Marginal Means, ..
at baseball practice a batter can swing at a pitch until he gets 3 hits. the probability that he hits a random pitch is
This section about DRB(Data Requirement Brief). The variable of these data collected is turnover of two sectors: Sector 52: Retail Trade and Sector 11: Extraction of Crude Petroleum. Those companies are random choose as the sample of group of reta..
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