Multiple Choice
The time to complete the construction of a soapbox derby car is normally distributed with a mean of three hours and a standard deviation of one hour. Find the probability that it would take between 2.5 and 3.5 hours to construct a soapbox derby car.
A) 0.3085
B) 0.3830
C) 0.6170
D) 0.6915
Correct Answer:

Verified
Correct Answer:
Verified
Q127: The probability P(Z < −1.28) is closest
Q130: Which of the following does not represent
Q131: Find the mean of the lognormal variable
Q132: The time for a professor to grade
Q133: The time of a call to a
Q134: An analyst is forecasting net income for
Q137: The time you must wait for an
Q138: A soft drink company fills two-liter bottles
Q139: The normal probability distribution is symmetric and
Q140: Excel's function NORMAL.DIST can be used to