A random variable is normally distributed with a mean of 40 and a standard deviation of 10. If an observation is randomly selected from the distribution, a. Find the value of x such that it is exceeded by no more than 25% of the distribution values. b. Find the value of x such that it is exceeded by 85% of the distribution values. c. Determine two values of x for which the smaller has 5% of its distribution values below it and the larger has 5% of its distribution values above it.

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