Texas Instruments TI-83 Manual Book page 387

Interpret the results.
The first line,
(159.74,173.94)
interval for the population mean is between about 159.74 centimeters
and 173.94 centimeters. This is about a 14.2 centimeters spread.
The .99 confidence level indicates that in a very large number of
samples, we expect 99 percent of the intervals calculated to contain the
population mean. The actual mean of the population sampled is 165.1
centimeters, which is in the calculated interval.
The second line gives the mean height of the sample
this interval. The third line gives the sample standard deviation
bottom line gives the sample size
To obtain a more precise bound on the population mean
heights, increase the sample size to 90. Use a sample mean
and sample standard deviation
random sample. This time, use the
option.
7. Press ... |
editor for
TInterval
Press ~ Í to select
changes so that you can enter summary
statistics as input.
TI-83 Plus Inferential Statistics and Distributions
, shows that the 99 percent confidence
Sx
to display the inferential stat
8
.
Inpt:Stats
.
n
of 7.1 calculated from the larger
(summary statistics) input
Stats
. The editor
used to compute
þ
. The
Sx
of women's
m
of 163.8
þ
384