In interval estimation, the t distribution is applicable only when

a. the population has a mean of less than 30.
b. the sample standard deviation is used to estimate the population standard deviation.
c. the variance of the population is known.
d. the mean of the population is unknown.


b

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A. organizational mix. B. pricing mix. C. product mix. D. retail mix. E. wholesale mix.

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A corporation is:

A. liable for all torts committed by its employees while acting within the scope of their employment. B. liable for all torts committed by its employees under the doctrine of ultra vires. C. liable for all torts committed by its retired and ex-employees. D. not liable for the torts committed by its employees while acting on the instructions of a high-level manager.

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