11 The quantity of fuel used by a coach on a return trip of 200 km is modelled as a normal variable with mean 45 litres and standard deviation 1.5 litres. (i) Find the probability that in nine return journeys the coach uses between 400 and 406 litres of fuel. (ii) Find the volume of fuel which is 95% certain to be sufficient to cover the total fuel requirements for two return journeys.

11 The quantity of fuel used by a coach on a return trip of 200 km is modelled as a normal variable with mean 45 litres and standard deviation 1.5 litres. (i) Find the probability that in nine return journeys the coach uses between 400 and 406 litres of fuel. (ii) Find the volume of fuel which is 95% certain to be sufficient to cover the total fuel requirements for two return journeys.

Name: Question and answer key 11 The quantity of fuel used by a coach on a r
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Description: Question and answer key 11 The quantity of fuel used by a coach on a return trip of 200 km is modelled asa normal variable with mean 45 litres and standard deviation 1.5 litres.(i) Find the probability that in nine return journeys the coach uses betw

PREALGEBRA

15th Edition

ISBN:9781938168994

Author:OpenStax

Publisher:OpenStax

Chapter5: Decimals

Section5.6: Ratios And Rate

Problem 5.127TI: TRY IT : 5127 Find the unit rate: $630 for 35 hours.

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