8.4 What is the modal interval? 8.5 Draw a histogram to represent the data.
8.6 Write a short report on what the data shows us about data usage on cell phones.
8.7 How can cell phone companies use this data to increase their client base?
Question 9
9.1 Xolisa sells ice cream at carnivals. She sells the following flavours: strawberry, chocolate, fudge and lemon. The ice cream comes in either a tub, cone or sugar cone; and the following toppings are offered: flake, sprinkles, caramel sauce and nuts. She charges R15 for the ice cream, including the toppings. 9.1.1 How many different combinations does Xolisa offer? Draw a tree diagram that shows all the possible combinations. (2)
9.1.2 If a child chooses an ice cream at random, write the probability (as a fraction) that the child will choose: (i)
chocolate flavour (ii) (iii) strawberry flavour and a sugar cone fudge flavour, in a tub with caramel sauce
9.2 James has eight socks in his drawer: two red, two green, two yellow and two blue. James pulls out a sock at random. He does not return the sock to the drawer. He then pulls out another sock. 9.2.1 Draw a tree diagram to show all possible outcomes.
9.2.2 Calculate the probability of James pulling out a matching pair of socks in his first two tries.
9.2.3 Calculate the probability of James pulling out first a red sock, then a green sock and then another red sock, without replacing any of the socks he pulls out.
(1) (1) (1)
(1) (3)
(2) (1) [10]
(2) (2) (1) [10] Total: 100 marks
456 Chapter 17: Programme of Assessment
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