Suppose x has a distribution with a mean of 55 and a standard deviation of 28. Random samples of size n = 49 are drawn. (a) Describe the x distribution and compute the mean and standard deviation of the distribution. (b) Find the z value corresponding to x = 67. (c) Find P(x < 67). (d) Would it be unusual for a random sample of size 49 from the x distribution to have a sample mean less than 67? Explain.

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Q: Can you make the answer more clearer ?

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