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ngocchapcheng11 ngocchapcheng11
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7 years ago
The sample covariance may never be negative.
 
  Indicate whether the statement is true or false

Q. 2

Let the random variable Z follow a standard normal distribution. Find P(-1.33 < Z < 0.78).
 
  A) 0.6905
  B) 0.2823
  C) 0.2177
  D) 0.3095

Q. 3

What is the mean weight of the sample of cereal boxes?
 
  A) 15.5
  B) 15.7
  C) 16.0
  D) 16.5

Q. 4

What is the probability that the shipment will have defective parts?
 
  A) 0.20
  B) 0.90
  C) 0.86
  D) 0.10

Q. 5

The field of statistics can be roughly subdivided into two areas: descriptive statistics and probability.
 
  Indicate whether the statement is true or false

Q. 6

What does the uniform and normal probability distribution have in common?
 
  A) Both have the same standard deviation.
  B) The mean, median, and mode are equal for each.
  C) About 68 of the observations are within one standard deviation of the mean.
  D) The uniform distribution uses discrete data; the normal distribution is based on continuous data.
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grokiegrokie
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7 years ago
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wrote...
#2
7 years ago
Wow! Thanks you for this correct set of answers, wasn't expecting it...
wrote...
#3
7 years ago
My pleasure!
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