Batteries life spans are normally distributed the mean is

Batteries' life spans are normally distributed. The mean is 2300. The standard deviation is 20 hours.

What percent of batteries have a life span of more than 2330 hours?

Is it usual or unusual for a battery to have a life span of more than 2330 hours? Why?

A find the magnitude and the direction of the wind velocity : an airplane pilot sets a compass course due west and maintains an airspeed of 214 kmh. after flying for a time of 0.520

Concentrated hydrochloric acid is a stron acid with : 1. a solution of vinegar has a ph of 2.85. calculate thehydronium ion concentratation and the hydroxide ion

Assuming that the natural gas may be approximated as pure : compressed natural gas is stored in a spherical tank 8 meters in diameter at ambient temperature 25 degc and at a

Calculate the frictional force needed for a 900 kg car : calculate the frictional force needed for a 900 kg car traveling around a 500 m radius curve at 25 ms if the car is to

Batteries life spans are normally distributed the mean is : batteries life spans are normally distributed. the mean is 2300. the standard deviation is 20 hours.what percent of

In a mild steel block a flat surface of length 100 mm and : in a mild steel block a flat surface of length 100 mm and width 60 mm has to be finished in a shaping machine in a

A uniform electric field of 300 nc makes an angle of 25o : a uniform electric field of 300 nc makes an angle of 25o with the dipole moment of an electric dipole. if the potential

A 13 ml sample of a solution of albr3 was diluted with : a 13 ml sample of a solution of albr3 was diluted with water to 25ml. a 15 ml sample of the dilute solution was found

Derive the model equation mass and temperature for a pfr : derive the model equation mass and temperature for a pfr reactor with a first order reqaction a product. assume