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Find the Specified Percentile, Quartile, or Decile

Question 135

Multiple Choice

Find the specified percentile, quartile, or decile.
-The lifetimes of lightbulbs of a particular type are normally distributed with a mean of 263 hours and a standard deviation of 8 hours. Find the first quartile, Q1 .


A) 257.64
B) 268.36
C) 265
D) 261

Correct Answer:

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