Only one critical parameter is needed to calculate probability with a normal curve.
false
A normal curve can be described with one specific mathematical equation, if the values of the variables are known.
true
On a real number line, a change in the mean shifts a normal curve horizontally, and a change in the standard deviation shifts the normal curve vertically
false
Standard deviation (σ) is another way to give the width of a normal curve.
true
For the Shapiro-Wilk test for normality, a P-value = 0.25 means that the data follow a normal shape
true
Which of the following answers is NOT true of a statistical event.
An event is an area under a normal curve
What is the appropriate mathematics to use to find a left tail area
An area from the z-table.
What is the appropriate mathematics to use to find a two-tail area
An area from the z-table + an area from the z-table.
What is the appropriate mathematics to use to find a right body area
1 - An area from the z-table.
What is the appropriate mathematics to use to find a middle body area
1 - a left area from the z-table - a right area from the z-table.
What is the appropriate mathematics to use to find a right-side area
The larger area from the z-table - the smaller area from the z-table.
The areas defined in the Empirical Rule of statistics are valid for all normal curves
true
Which of the following answers is NOT true about why the Empirical Rule focuses out to
(µ±3σ), but not beyond
The information beyond µ±3σ is much harder to calculate
