Answer to Question #76862 in Statistics and Probability for SHEHZAAD

Question

4.1 A discrete random variable can be described by the Binomial distribution if it satisfies four conditions. List each of these conditions. (4 marks)
4.2 Statistics show that 40% of Zimbabweans adults drink beer. If six Zimbabweans adults are randomly selected,
calculate the probability that four drink beer. (5 marks)
4.3 The average mark (in percentage) for an Economics test comprising of 300 students is 54%. If the marks are normally distributed with a standard deviation of 8%, determine the number of students with a mark over 70%.
(5 marks)
4.4 Differentiate between the following terms as used in statistics:
4.4.1 Ordinal Scaled data and Nominal-scaled data (2 marks)
4.4.2 Discrete Data and Continuous data (2 marks)
4.4.3 Observation and experimentation (2