Suppose x has a distribution with a mean of 20 and a standard deviation of 3. Random samples of size n = 36 are drawn. a) Describe the x distribution and compute the mean and standard deviation for the distribution. b) Find the z value corresponding to x=19 c) find P(x<19) d) Would it be unusual for a random sample of size 36 from the x distribution to have a sample mean less than 19? Explain.
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Suppose x has a distribution with a mean of 20 and standard deviation of 3. Random samples of size n=36 are drawn. a. Describe the x̄ distribution and compute its mean and standard deviation. b. Find the z-score corresponding to x̄ = 19. c. Find P(x̄ < 19) d. Would it be unusual for a sample of size 36 from the x distribution to have a sample mean less than 19? Explain your answer.
Maitreya E.
suppose x has a distribution with a mean of 20 and a standard deviation of 3. Random samples of size n=36 are drawn. a-describe the x distribution and comute the mean and standard deviation of the distribution. b-find the z value corresponding to x=19. c-find P(x<19).
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Suppose $x$ has a distribution with a mean of 8 and a standard deviation of $16 .$ Random samples of size $n=64$ are drawn. (a) Describe the $\bar{x}$ distribution and compute the mean and standard deviation of the distribution. (b) Find the $z$ value corresponding to $\bar{x}=9$ (c) Find $P(\bar{x}>9)$ (d) Interpretation Would it be unusual for a random sample of size 64 from the $x$ distribution to have a sample mean greater than $9 ?$ Explain.
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