Free CSSBB Exam Braindumps (page: 17)

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This table displays the inventory of fasteners in a storage cabinet. An item is selected at random from the fastener cabinet. Find the approximate probability it is larger than 1/2.

  1. .35
  2. .65
  3. .1106
  4. .47
  5. none of the above

Answer(s): B




This table displays the inventory of fasteners in a storage cabinet. An item is selected at random from the fastener cabinet. Find the approximate probability it is a 1/2 inch bolt.

  1. .65
  2. .30
  3. .09
  4. .35
  5. none of the above

Answer(s): C



A medicine with efficacy of .52 is given to five patients. Find the approximate probability that at least one of the patients is cured. (Hint: Use the binomial formula.)

  1. .975
  2. .480
  3. .531
  4. .416
  5. none of the above

Answer(s): A



= 0.05 A sample of size 50 from machine A has a mean of 18.2 and standard deviation 3.1. A sample of size 40 from machine B has mean 17.6 and standard deviation 2.8. Do these data indicate that the population for machine A has a larger mean? Assume the populations are normal.

  1. yes
  2. no

Answer(s): B






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