day of the week	mon	tue	wed	thur	fri	sat	sun
How many people came in	24	27	19	31	22	34	32
How many people ordered a coffee.	20	21	12	27	19	28	26

oconfidence intervals

to estimate a population proportion

to estimate a population mean whenis known

to estimate a population mean whenis unknown

to estimate a population variance (squared)

ohypothesis testing, one-sample

z-test: to test information aboutof a population whereis known and the sample size is greater than or equal to 30 units

student'st-test: to test information aboutof a population

whereis unknown and/or the sample size is less than 30 units

z-test for proportions: to test information aboutpof a

population

ohypothesis testing, two-sample

t-test: use to test the difference (d) between two population means

matched pairst-test; use to test whether there is a significant mean difference between two sets of paired data

Which of these tests do I use for this data set and why?