the times per workout an athlete uses a stair climber are normally distributed with a mean of 20 minutes and standard devation of 5 minutes what percebtage of athletes use the stair climber for less than 18 minutes

true

explanation:

pakistan's principal natural resources are arable land and water. about 25% of pakistan's agriculture accounts for about 21% [1] of gdp and employs about 43% of the labour force. in pakistan, the most agricultural province is punjab where wheat and cotton are the most grown.

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step-by-step explanation:

the surface area is 124cm²

step-by-step explanation:

length: 4cm

width: 9cm

height:   2cm