JewelMist.com estimates the cost of relocating its headquarters to Los Gatos, CA with a normal distribution centered on $9.5 million and having a standard deviation of $1.1 million.According to this distribution, there's a 45% chance that the cost will be between $9.5 million and $ how many million.(Make $9.5 million the lower boundary for your interval.)
A)11.315
B)10.783
C)9.961
D)11.652
E)10.782

Question

Quizplus · Accepted Answer

The correct answer is A.The standard deviation is $1.1 million, so the interval from $9.5 million to $11.315 million is one standard deviation above the mean. The probability of being within one standard deviation of the mean is 68%, so the probability of being between $9.5 million and $11.315 million is 45%.

JewelMistCom Estimates the Cost of Relocating Its Headquarters to Los