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v P1 . The length of an adult Dachshund is found to be normally distributed with mean / and standard deviation o. Given that 20%

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P1 . The length of an adult Dachshund is found to be normally distributed with mean / and standard deviation o. Given that 20% of Dachshunds have a length less than 16 inches and 10% have a length greater than 18 inches, find: a the value of u and the value of o (6 marks) b the interquartile range. (2 marks) P2 The random variable X ~ N(2.68, o?). Given that P(X > 2a) = 0.2 and P(X

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