Suppose x has a distribution with a mean of 70 and a standard deviation of 21. Random samples of size n=36 are drawn. a. Desribe the x distribution.        x has a normal distribution      x has a binomial distribution      x has a geometric distribution        x has an approximately normal distribution      x has a poisson distribution      x has an unknown distribution Compute the mean and standard deviation of the distribution. (For each answer, enter a number)        ux =        ox = (b) Find the z value corresponding to x = 63. (Enter an exact number.)       z = (c) Find P(x < 63). (Enter a number. Round your answer to four decimal places.)  P(x < 63) = (d) Would it be unusual for a random sample of size 36 from the x distribution to have a sample mean less than 63? Explain

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Suppose x has a distribution with a mean of 70 and a standard deviation of 21. Random samples of size n=36 are drawn.

a. Desribe the x distribution. 

      x has a normal distribution

     x has a binomial distribution

     x has a geometric distribution  

     x has an approximately normal distribution

     x has a poisson distribution

     x has an unknown distribution

Compute the mean and standard deviation of the distribution. (For each answer, enter a number)

       ux =

       ox =

(b) Find the z value corresponding to x = 63. (Enter an exact number.)

      z =

(c) Find P(x < 63). (Enter a number. Round your answer to four decimal places.)

 P(x < 63) =

(d) Would it be unusual for a random sample of size 36 from the x distribution to have a sample mean less than 63? Explain

 

   

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