- Probability Question 1 There Are 5 White And 7 Red Balls In A Bag A Ball Is Selected At Random And Replaced A Second B 1 (23.25 KiB) Viewed 32 times
Probability Question 1 There are 5 white and 7 red balls in a bag. A ball is selected at random and replaced. A second b
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Probability Question 1 There are 5 white and 7 red balls in a bag. A ball is selected at random and replaced. A second b
Probability Question 1 There are 5 white and 7 red balls in a bag. A ball is selected at random and replaced. A second ball is then selected at random. a) Draw a tree diagram to represent this data. (3 marks) b) What is the probability of two red balls being selected? (2 marks) c) What is the probability that 1 white and 1 red ball are selected in any order)? (3 marks) Question 2 A company are randomly selecting groups of 10 people from a population to complete surveys on a new product. If 30% of the population are smokers, find the probability that: a) There are no smokers in the sample of 10 people (4 marks) b) There are less than 5 smokers in the sample of 10 people (8 marks)
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