The graph shows the standard normal distribution pdf (probability density
function), the location of the critical points z , the mean value (23.2) and
Press @TE T to
the corresponding interval limits (21.88424 and 24.51576).
return to the previous results screen, and/or press @@@OK@@@ to exit the confidence
The results will be listed in the calculator's display.
Additional examples of confidence interval calculations are presented in
Chapter 18 in the calculator's user's guide.
A hypothesis is a declaration made about a population (for instance, with
respect to its mean). Acceptance of the hypothesis is based on a statistical
test on a sample taken from the population.
The consequent action and
decision-making are called hypothesis testing.
The calculator provides hypothesis testing procedures under application 6.
Conf Interval can be accessed by using ‚Ù—— @@@OK@@@.
As with the calculation of confidence intervals, discussed earlier, this program
offers the following 6 options:
These options are interpreted as in the confidence interval applications: