Question

You run a small cafe, and you want to know whether the cafe’s typical daily income is greater than $200. So, you gather data on the income from 30 randomly selected days, and you want to test ?0:?=200 ??:?>200 A histogram shows that the data in your sample is slightly skewed. You do not know the true, long-term standard deviation of your cafe’s income. Which of the following methods would be appropriate to compute a p-value for the hypothesis test listed above? A. binomcdf B. T-test C. One Mean applet D. normalcdf E. One Proportion applet F. 1-PropZTest (select all that apply)

Answer #1

T-tests are used when you want to examine differences but you do
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t-tests that you may choose to do: one-sample t-test, independent
sample t-test, or dependent sample t-test. You can calculate these
by hand, in SPSS, or in Excel. The instructions below can be used
for SPSS and your textbook offers instructions for using Excel.
Single-sample t-tests
These tests are used when you want to determine the
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