SIMULATIONS ON MINITAB
Please note: Exact instructions will
vary according to the platform and release of Minitab that you are
using, but you should be able to figure out what to do from the
For Exercise 3.74:
a: Use Calc --> Random Data --> Binomial.
Enter 100 rows of data, number of trials = 50, probability of success = 0.6
To divide the 100 results by 50, use Calc --> Mathematical Expressions.
Type in the column where you want the result under
"variable (new or modified)", and in the Expression box, type the
column where you have the results of the simulation stored, then /50
(for example, c1/50)
Note: If when you copy something (e.g., a stemplot)
from the session window of Minitab, you don't get columns aligned,
trying using the font Monaco.
b and c: You should be able to figure out the
appropriate modifications for parts (b) and (c). (Think carefully for
forming p-hat in part (c).)
For Exercise 3.76: If you use
the applet as instructed, you probably will not be able to copy the
samples to other software to find the means easily. Here is an
alternative using Minitab:
To get a random sample of 10 from the integers 1
through 100, use Calc --> Random Data --> Integer. Enter 10 rows
of data, the column where you want it stored, minimum 1, and maximum
100. To take the mean of your sample, you can use Column Statistics
from the Calculate menu, and check Mean.
For Exercise 3.77: The data
file is in the Appendix folder of the textbook data sets. To take a SRS
of 20 from the data, use Calc --> Random Data --> Sample from
Columns. Enter 20 for number of rows, the column where you have the gpa
data for "sample from," and a new column for "store in." Do not check "sample with replacement," since you want to sample without replacements.