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Using a TI-84 calculator Jane wants to estimate the proportion of students on her campus who eat cauliflower. After surveying 37 students, she finds...

Using a TI-84 calculator


Jane wants to estimate the proportion of students on her campus who eat cauliflower. After surveying 37​ students, she finds 5 who eat cauliflower. Obtain and interpret a 99​% confidence interval for the proportion of students who eat cauliflower on​ Jane's campus using Agresti and​ Coull's method.

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TI84.png

1. Press the
STAT
button and highlight TESTS.
2. Scroll down to A: 1-PropZInt
3. Enter x = the number of succes
cesses and n = the number of trials or sample size.
x=5
aND n =37
0.99
4. Enter the...

4 comments
  • I keep getting this wrong. I did the above and it is still wrong. Is the Agresti and​ Coull's method different than what is done above?
    • eteam4life
    • Apr 03, 2019 at 7:22pm
  • Yeah, that is a completely different method and you cannot use TI-84 calculator for that.
    • kariukiderric1
    • Apr 03, 2019 at 7:33pm
  • what would be the best way to work it with this method?
    • eteam4life
    • Apr 03, 2019 at 7:39pm
  • You will have to do it by hand.
    • kariukiderric1
    • Apr 03, 2019 at 7:40pm

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