summative test 2

1. Which part of the normal curve is extended indefinitely in both directions along the horizontal axis, approaching but never touching it?  

• center

• top

• tail

• spread

1. According to the property of a Normal Probability Distribution, the mean is equal  to what measures of central tendency?  

• median

• mode

• median and mode

• median and mean

1. Which of the following graphs is the BEST example of the normal curve?

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• 
• 
• 

1. A standard normal distribution has which of the following properties?

• The mean is equal to 0 and the variance is equal to 1.

• The mean is equal to the standard deviation.

• The mean is equal to the variance.

• The mean and variance equal to 1.

1. Based on the empirical rule, the bell-shaped distribution will have approximately 68% of the data within what number of Standard Deviations from the mean?      

• 0

• 1

• 2

• 3

Where can we find the area of a specific region under the curve, also known as z-table?

• Table of Areas of Geometric Figure   

• Periodic Table of Elements

• Table of Contentc

• Table of Areas Under Normal Curve  

1. Find the area above z= 2.56

• 9948

• 0.4948

• 0.9946

• 0.0052

1. Find the area under the standard normal curve between z = -2.5 and z =1.5

• 0.0062

• 0.9270

• 0.9332

• 0.9392

1. Find the area under the standard normal curve between z = 0 and z = 3

• 0.4987

• 1.4987

• 0.9987

• 0.5000

1. How will you describe this graph?

• The shaded region of the normal curve is above the z = -1      

• The shaded region of the normal curve is between z = 0 and z = 1      

• The shaded region of the normal curve is below the z = 1     

• The shaded region of the normal curve is between z = -1 and z = 1