Click this linkto download the spreadsheet for use in this activity.

Critical values for quick reference during this activity.

Confidence level | Critical value 0.90 = 1.645 0.95 = 1.960 0.99 = 2.576A Come because of 1 coffee shop 2 No 3 Yes 4 Yes 5 Yes 6 No 7 No 8 No 9 Yes 10 Yes 11 Yes 12 Yes 13 Yes 14 No 15 No 16 No 17 Yes 18 Yes 19 Yes 20 No 21 Yes 22 Yes 23 No 24 Yes 25 Yes 26 Yes 27 Yes 28 Yes 29 No 30 Yes 31 Yes 32 Yes 33 Yes 34 YesA 35 Yes 36 Yes 37 Yes 38 Yes 39 Yes 40 Yes 41 Yes 42 Yes 43 Yes 44 Yes 45 Yes 46 Yes 47 Yes 48 Yes 49 Yes 50 Yes 51 Yes 52 Yes 53 Yes 54 Yes 55 Yes 56 No 57 Yes 58 No 59 Yes 60 Yes 61 Yes 62 Yes 63 Yes 64 Yes 65 Yes 66 Yes 67 Yes 68 Yes 69 Yes 70 Yes 71 Yes 72 No 73 Yes 74 Yes 75 No 76 Yes