) State whether the following is a discrete or continuous random variable.   i. Number of seeds in a tomato  ii. The number of litres of water used per household  iii. The ages of children in a preschool    b) Determine the sampling methods used in each of the scenarios below  i. Select every 9th candy bar from a production line to check its weight  ii. Group t-shirts by colors and select t-shirts at random from within each group in  proportion to the number of t-shirts that make up that group.  iii. Use random number tables to select 15 students from a class.  iv. Select 8 white cars, 5 blue and 3 red cars.  v. Name one advantage of the sampling method in ii)

MATLAB: An Introduction with Applications
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a) State whether the following is a discrete or continuous random variable.  

i. Number of seeds in a tomato 

ii. The number of litres of water used per household 

iii. The ages of children in a preschool 

 

b) Determine the sampling methods used in each of the scenarios below 

i. Select every 9th candy bar from a production line to check its weight 

ii. Group t-shirts by colors and select t-shirts at random from within each group in  proportion to the number of t-shirts that make up that group. 

iii. Use random number tables to select 15 students from a class. 

iv. Select 8 white cars, 5 blue and 3 red cars. 

v. Name one advantage of the sampling method in ii) 

 

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