Multiple Choice
If light bulbs have lives that are normally distributed with a mean of 2500 hours and a standard deviation of 500 hours, what percentage of light bulbs have a life less than 2500 hours?
A) About 25%
B) About 50%
C) About 75%
D) About 68%
Correct Answer:
Verified
Correct Answer:
Verified
Related Questions
Q17: The weights of the fish in a
Q18: The mean life of a set of
Q19: The scores on a certain test are
Q20: The weights of a large population of
Q21: Assuming that the lengths of the inchworms
Q23: Decide which of the described variables likely
Q24: The amount of Jen's monthly phone bill
Q25: If light bulbs have lives that are
Q26: There are over 1200 species of inchworms
Q27: The diameters of pencils produced by a