|| VU Expert 2009 || sta 301

 

which is the correct options

Stem and leaf is more informative when data is :

       ► Equal to 100

 

       ► Greater Than 100

 

       ► Less than 100

 

       ► In all situations

The number of telephone calls that pass through a switchboard has a Poison distribution with mean equal to 2 per minute. The probability that no telephone calls pass through the switchboard in two consecutive minutes is:

 

Select correct option:

1.      0.2707

2.      0.0517

3.      0.0183

4.      0.0366

 

Which of the following is NOT CORRECT about a standard normal distribution?

 

Select correct option:

1.      P(0 ≤ Z ≤ 1.50) = .4332

2.      P(Z ≥2.0) = .0228

3.      P (Z ≥-2.5) = .4938

4.      P (Z ≤ -1.0) = .1587

 

 

 

 

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