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1.Refer to the time series data in Exercise 1. Using the average of all the historical data as a forecast for the next period, compute the following measures of forecast accuracy:
a. Mean absolute error
b. Mean squared error
c. Mean absolute percentage error
d. What is the forecast for week 7?
grandma gertrudes chocolates a family owned business has an opportunity to supply its product for distribution through
a student earned a score of 940 on a national achievement test. the mean test score was 850 with a standard deviation
Compute the Return to Risk Ratio (RRR). On the basis of the results of (A) - (C), which action should the vendor take - sell soft drinks or ice cream? Why?
The probability of error in the transmission of a binary digit over a communication [2] channel is 1=103. Write an expression for the exact probability of more than 3 errors when transmitting a block of 103 bits. What is its approximate value? Ass..
thickness measurements of a coating process are made to the nearest hundredth of a millimeter. the thickness
In analyzing two independent small samples you notice that the standard deviation for both samples are the same. How does this affect the S2p (the pooled variance)? Explain your answer.
a survey of 25 randomly selected iphone owners showed that the purchase price has mean of 440 with a sample standard
Determine the correlation coefficient and determine the coefficient of determination and determine the coefficient of correlation and coefficient of determination.
from a group of 7 paintings 3 are water colors and 4 are oils. in how many ways can you hang 3 paintings along a wall
the sales of high-brite toothpaste are believed to be approximately normally distributed with a mean of 5000 tubes per
Compute the test statistic for the goodness of fit test. At 95% confidence using the p-value approach, test the hypotheses. What do you conclude about the distribution?
The quality-control inspector checks 200 pieces in a certain operation. The piece is either good or defective. The record for nine hours.
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