In which of the following cases is a proportion of the observations of a sample used in
estimating the confidence interval?
A) when the degrees of freedom are too large
B) when a true sampling distribution cannot be estimated
C) when the population standard deviation is known
D) when variables have only two possible outcomes
Answer:
Which of the following describes standard deviation?
A) It is the average of the greatest and least values in the data set.
B) It is the square root of the variance.
C) It is the difference between the first and third quartiles of a data set.
D) It is the average of the squared deviations of the observations from the mean.
Answer:
Which of the following functions is a logical function that returns TRUE if any
condition is true and FALSE if not?
A) TO(value if true, value if false)
B) AND(condition 1, condition 2’¦)
C) OR(condition 1, condition 2’¦)
D) IF(condition, value if true, value if false)
Answer:
Consider the spreadsheet for a Newsvendor Model.
What is the value of standard deviation?
A) $12.50
B) $10.99
C) $15.86
D) $20.25
Answer: