Multiple Choice
A new extended-life light bulb has an average life of 750 hours, with a standard deviation of 50 hours. If the life of these light bulbs approximates a normal distribution, about what percent of the distribution will be between 600 hours and 900 hours?
A) 95%
B) 68%
C) 34%
D) 99.47%
Correct Answer:
Verified
Correct Answer:
Verified
Q10: Nonstop Airlines determined that the mean number
Q22: What is the area under the normal
Q28: For a uniformly distributed random variable,x,P(x)= 1/(b
Q41: A national manufacturer of unattached garages discovered
Q59: A sample of 500 part-time students revealed
Q62: After arriving at the university student medical
Q63: Customers of the Key Refining Company charge
Q69: The exponential distribution is applied to situations
Q71: When referring to the normal probability distribution,there
Q72: A cola-dispensing machine is set to dispense