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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?
Check whether the following sample has been drawn from a Normal population. Calculate 95% Confidence interval for population Variance and standard deviation.
The problem related to Basic Statistics and it discuss about giving an example on one of the application of sampling methods and how the sample is statistically important in allowing in taking decisions on the entire population
Again consider the automobile parts supplier situation. Remember that a problem-solving team will be assigned to rectify the process producing the cylindrical engine parts if the null hypothesis H0: µ = 3 is rejected in favor of Ha: µ ≠ 3. In thi..
a). Is this evidence at 1% level that Professor Han's method produces less than 25% grades less than a C? b). What is the p-value for your test?
Using standard methods for linear statistical prediction, find the percent increase in sales revenue that would be expected if the price were lowered by 15%. Find the usual measure of the strength of association between price reduction and sales re..
A certain laboratory animal used in preclinical evaluations of experimental catheters gives birth to only one offspring at a time. The probability of giving birth to a male or a female offspring is equally likely. In three consecutive pregnancies ..
in a large population the percentages of males and females are both 50 while 15 are left-handed with the remaining 85
1. give examples of two variables that are positively correlated and two that are negatively correlated.2. what
X is a continuous random variable uniformly distributed on [20, 45] that is, the end points c = 20 and d = 45.
A lawsuit has been filed against your company by a disgruntled employee. It seems that the bonuses you awarded were flawed and those who were awarded bonuses based on their high transactions only did because they ignored a large percentage of cust..
A professor took a sample of 194 students from her morning class and 131 in the evening class. On the 1st exam, all those sampled from the morning class got 64 while those sampled from the evening averaged to 71 with a variance of 179. If the two ..
Compute the grouped data mean for this distribution. Use MINITAB and using the original scores, compute the raw-data mean. Use MINITAB.
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