STA 2122 CH.4
In the normal curve, the value of the mean is
0
In the normal curve, the value of the standard deviation is
1
How much area under the normal curve is found beyond the Z values of +/- 2.58?
1%
What percentage of scores/value lie outside a Z score of 1.96 in the normal distribution?
2.5%
How much area under the normal curve is found beyond the Z values of +/- 1.96?
5%
What percentage of scores/values occupy an area between the mean and a Z score of -2.58 in the normal curve distribution?
69.51%
The Z values of +/- 1.96 encompass what percentage of area under the normal curve?
95%
The Z values of +/- 2.58 encompass what percentage of area under the normal curve?
99%
Which of the following is true?
A normal distribution is empirical and the normal distribution is theoretical
The normal curve/distribution is a
Theoretical curve/distribution
Which of the following Z score values represents the location closest to the mean?
Z= +.50
Which of the following Z scores is farthest from the mean?
Z= -2.00
Which of the following scores represents the mean?
Z= 0
A Z score is
a point along the base line of the normal curve and the ratio of the difference between a score and the mean, divided by the standard deviation
The normal curve/distribution is
a symmetrical distribution
The normal curve/distribution is based upon
an infinite number of cases