Question: Solution contains 3 files I need all steps and detailed solution. A B D F G H 1 J K 1 1 A sample of

Solution contains 3 files I need all steps and detailed solution.

A B D F G H 1 J K 1 1 A sample of 200 men have average height 168cm with stdev 14cm. A sample of 300 women have average height 156cm with stdev 19cm. 2 3 4 (a) Are the stdevs of the two populations equal at confidence 85%? (2 marks) (b) Are men taller than women by more than 5cm? Use the appropriate test depending on answer to part (a). Significance 7%. (3 marks) (c) 6 men and 4 women are selected at random. Assume the populations are infinite for this selection. What is the probability that at least 3 of the selected people are taller than 160cm? (5 marks) 5 6 7 Solution

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