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The Life of a Light Bulb Is Exponentially Distributed with a Mean

question 9

Multiple Choice

The life of a light bulb is exponentially distributed with a mean of 1,000 hours. What is the probability that the bulb will last less than 800 hours?

Identify and differentiate between various measures of location and dispersion (range, interquartile range, variance, standard deviation).
Calculate and understand the implications of the trimmed mean for a given data set.
Understand the calculation of sample mean and its distinction from population mean.
Grasp the concept of sample statistics as summary measures for data analysis.

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