You own a stock with an average return of 15 percent and a standard deviation of 15 percent. In any one given year, you have a 68 percent chance that you will not lose more than percent nor earn more than percent on this stock.

0%

30%

Explanation:

Given:

Average return = 15%

Standard deviation = 15%

Computation:

On assuming 68% chance,

Lowest point  = Average return - Standard deviation  

Lowest point = 15% - 15%

Lowest point = 0%

Highest point  = Average return - Standard deviation

Highest point = 15% + 15%

 Highest point = 30%

Therefore, on 68%, Lowest point is 0% and highest point is 30%.

you can lose ranking 2 ways.

1) you don't have enough points due to you expending them by asking questions/your answers are deleted.

2) your brainliest's expired. this means that brainliests, once they exceed the 30 day limit, expires. this is to ensure that you continue to contribute into the community at a constant rank if you want to continue to have/exceed the rank you have right now.

if you go to profile, and click "show more information" located on the bottom left of the box with your information (on top of the questions answered, questions asked, and friends), you will be given the following information (example):

member since : 02/13/2017, 18: 11

questions answered: 9741

questions asked: 162

no. of brainliest answers: 1575

brainliest answers in last 30 days: 10

warnings: 0 view

questions/answers reported: 2637

questions/answers incorrectly reported: 64

look at the "brainliest answers in the last 30 days". this is the one that will affect your rank other than your points. again, once your brainliest expires (was earned 31+ days ago), it will not be counted.

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i believe the answer would have to be a dependable person