Stats

What is the z value such that 50% of the total area lies to the right of the curve in a normal distribution?

0

A ___ is another term which can be used to describe an approximately bell shaped curve

approximately normally distributed

A ___ is employed when a continuous distribution is used to approximate a discrete distribution.

correction for continuity

The area under the normal distribution curve that lies within three standard deviations of the mean is approximately 95%

false

The standard deviation of sample means will be larger than the standard deviation of the population, and it will be equal to the population standard deviation multiplied by the square root of the sample size

false

The total area under the distribution curve is approximately .99 but can never be equal to 1.0

false

When finding the area under the curve between two z values, the procedure is to subtract the two z values and look up the corresponding area in Table E

false

The ___ correction factor is necessary if relatively huge samples are taken from a small population because the sample mean will then more accurately estimate the population mean and there will be less error in the estimation.

finite population

When the majority of the data values fall to the right of the mean, the distribution is said to be...

left skewed

Stating that the area under the curve between z=0 and z=1.00 is .03413 is the same as stating that the ___ of selecting any z value between 0 and 1.00 is 0.3413

probability

The ___ is the difference between the sample measure and the corresponding population measure due to the fact that the sample is not a perfect representation of the population

sample error

A ___ is a distribution obtained by using the means computed from random samples of a specific size taken from a population

sampling distribution of sample means

When the data values are evenly distributed about the mean, the distribution is said to be...

symmetrical

In applied statistics, the area under the normal distribution curve is more important than the frequencies

true

The area under the curve is always positive even if the z value is negative

true

The normal distribution curve can be used as a probability distribution curve for normally distributed variables

true