The sales forecast for the 2nd quarter of year 4 is approximately:
A) 113 units.
B) 255 units.
C) 140 units.
D) 369 units.
Q. 2The value of mean square error is:
A) 1678.9
B) 1,554.25
C) 1,493.63
D) 1,407.35
Q. 3The coefficient of multiple correlation is the square root of the coefficient of determination.
Indicate whether the statement is true or false
Q. 4In a recent survey of college professors, it was found that the average amount of money spent on entertainment each week was normally distributed with a mean of 95.25 and a standard deviation of 27.32.
What is the probability that the average spending of a sample of 25 randomly-selected professors will exceed 102.50?A) 0.0918
B) 0.1064
C) 0.3936
D) 0.4082
Q. 5Whenever the expected frequency of a cell is less than 5, one remedy for this condition is to decrease the significance level.
Indicate whether the statement is true or false
Q. 6You are the Webmaster for your firm's Website. From your records, you know that the probability that a visitor will buy something from your firm is 0.23.
If the number of visitors in one day is 952, what is the probability that less than 200 of them will buy something from your firm? Use the normal approximation for the binomial.
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