Mopeds $($small motorcycles with an engine capacity

below $50$ cm$3$

$)$ are very popular in Europe because of their

mobility, ease of operation, and low cost. The article

$$Procedure to Verify the Maximum Speed of Automatic

Transmission Mopeds in Periodic Motor Vehicle

Inspections$($J$.$ of Automobile Engr., $2008$: $16151623)$

described a rolling bench test for determining maximum

vehicle speed. A nor mal distribution with mean value

$46\mathrm{.}8$ km$/$h and standard deviation $1\mathrm{.}75$ km$/$h is postulated.

Consider randomly selecting a single such moped