Suppose x has a distribution with a mean of 50 and a standard deviation of 4. Random samples of size n = 64 are drawn. (a) Describe the x distribution. O x has a Poisson distribution. O x has an approximately normal distribution. O x has a geometric distribution. O x has an unknown distribution. O x has a binomial distribution. x has a normal distribution. Compute the mean and standard deviation of the distribution. (For each answer, enter a number.) Hz = Oz = (b) Find the z value corresponding to x = 51. (Enter an exact number.) (c) Find P(x < 51). (Enter a number. Round your answer to four decimal places.) P(x < 51) = (d) Would it be unusual for a random sample of size 64 from the x distribution to have a sample mean less than 51? Explain.
Suppose x has a distribution with a mean of 50 and a standard deviation of 4. Random samples of size n = 64 are drawn. (a) Describe the x distribution. O x has a Poisson distribution. O x has an approximately normal distribution. O x has a geometric distribution. O x has an unknown distribution. O x has a binomial distribution. x has a normal distribution. Compute the mean and standard deviation of the distribution. (For each answer, enter a number.) Hz = Oz = (b) Find the z value corresponding to x = 51. (Enter an exact number.) (c) Find P(x < 51). (Enter a number. Round your answer to four decimal places.) P(x < 51) = (d) Would it be unusual for a random sample of size 64 from the x distribution to have a sample mean less than 51? Explain.
MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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
Transcribed Image Text:Suppose x has a distribution with a mean of 50 and a standard deviation of 4. Random samples of size n = 64 are drawn.
(a) Describe the x distribution.
O x has a Poisson distribution.
O x has an approximately normal distribution.
O x has a geometric distribution.
O x has an unknown distribution.
O x has a binomial distribution.
x has a normal distribution.
Compute the mean and standard deviation of the distribution. (For each answer, enter a number.)
Hz =
Oz =
(b) Find the z value corresponding to x = 51. (Enter an exact number.)
(c) Find P(x < 51). (Enter a number. Round your answer to four decimal places.)
P(x < 51) =
(d) Would it be unusual for a random sample of size 64 from the x distribution to have a sample mean less than 51?
Explain.
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