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1) The actual values for 12 periods (shown in order) are:
(1) 45 (2) 52 (3) 48 (4) 59 (5) 55 (6) 54 (7) 64 (8) 59 (9) 72 (10) 66 (11) 64 (12) 78
Using a 5 period simple moving average, the forecast for period 13 will be:
2) Using the 4 period weighted moving average, the forecast for period 13 will be:
3) With exponential smoothing, the forecast for period 13 will be:
4) With linear regression, the forecast for period 13 will be:
5) With quadratic regression, the forecast for period 13 will be:
6) Considering only the forecasts for period 6-12, what is the lowest MAD value for any of the methods?
Find the mean and standard deviation of the sampling distribution of y‾.- Draw a sketch of the sampling distribution of y‾. Locate the mean on the graph.
Diversi?cation works better when the investments in a portfolio have small correlations. To demonstrate this, suppose that returns on 500 Index Fund and Diversi?ed International Fund had the means and standard deviations we have given but were unc..
an urn contains four red chips three white chips and two blue chips. a random sample size of 3 is drawn without
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1.a restaurant monitors its customers complaints. here are the percent of customers with the following complaintswith
Calculate the descriptive statistics from the data and display in a table. Be sure to comment on the central tendency,variability (both absolute and relative)as well as shape for each variable - Draw a graph that displays the distribution of the qu..
Draw the scatter diagram. Does it appear that x and y are related? If so, how? Test to determine whether there is evidence of a linear relationship
question eighteen per cent of multinational companies provide an allowance for personal long-distance calls for
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After the education program, 58 of the physicians in the control group prescribed the analgesic and 42 in the education group. Test for no difference in the proportion prescribing the analgesic at the α = .05 level.
When a researcher tests at the ,p=.05,p=.01 or p=.001 levels they can only be used in relationship to evaluate risk to patients in implementing the decisions based on research findings.
For the following summary table for a one-way ANOVA, fill in the missing items (indicated by asterisks), identify the null and alternative hypotheses.
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