STA 2122 CH.4

Pataasin ang iyong marka sa homework at exams ngayon gamit ang Quizwiz!

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


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