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At a golf driving range, a computer automatically records the length of each drive. The distribution of drive lengths

Expert replies
by M7MBA » Fri May 08, 2020 8:36 am

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At a golf driving range, a computer automatically records the length of each drive. The distribution of drive lengths follows a normal distribution. Is the percentage of drives over 200 feet in length greater than 15%?

(1) The average drive length is 150 feet.

(2) The standard deviation is 50.

[spoiler]OA=C[/spoiler]

Source: Princeton Review
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Source: — Data Sufficiency |

M7MBA wrote: ↑
Fri May 08, 2020 8:36 am
At a golf driving range, a computer automatically records the length of each drive. The distribution of drive lengths follows a normal distribution. Is the percentage of drives over 200 feet in length greater than 15%?

(1) The average drive length is 150 feet.

(2) The standard deviation is 50.

[spoiler]OA=C[/spoiler]

Source: Princeton Review
The GMAT does not require students to understand normal distributions.
So this question is beyond the scope of the GMAT.
Brent Hanneson - Creator of GMATPrepNow.com
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