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1. A random sample of 16 observations is to be drawn from a normal distribution having mean 1 1 and standard deviation 3. Let x

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1. A random sample of 16 observations is to be drawn from a normal distribution having mean 1 1 and standard deviation 3. Let x denote the sample mean. Find, correct to three decimal places (i) The probability that x will have a value between 9.2 and 12.2 (ii) The value of c for which P (x

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