How do I type this equation into my calculator?

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Homework Help Overview

The discussion revolves around calculating a confidence interval based on survey data regarding voting behavior. The original poster attempts to compute a margin of error using a specific formula but is uncertain about how to input it correctly into a TI-83 Plus calculator.

Discussion Character

  • Mathematical reasoning, Problem interpretation, Assumption checking

Approaches and Questions Raised

  • Participants are exploring the correct formulation of the equation for input into the calculator, questioning the placement of parentheses and the structure of the expression. There is a focus on clarifying the intended calculation and ensuring the proper order of operations is followed.

Discussion Status

The discussion is ongoing, with some participants seeking clarification on the original poster's intent and the specific calculation they are trying to perform. There is an acknowledgment of the need for precise notation in calculator input, but no consensus has been reached on the correct approach.

Contextual Notes

Participants note the potential for misunderstanding due to unclear phrasing in the original post, which may affect the calculation process. The original poster has expressed confusion about the use of parentheses in the equation.

rowdy3
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A survey of 1002 people, 701 said they voted in the last presidential elcetion. Voting records show 61% of the eligible voters voted. Find a 95% confidence interval and see if it corresponds to the 61% statistic. This is what I did.
z/2 = 1.96
p hat = x/n = 701/1002
q hat 1-.6996= .3004
E= 1.96 square root of .6996- .3004 / 1002 = .0284.
That's the right answer but don't know how to type it in my calculator. I keep getting .00124. I have a TI-83 Plus. Could you show me how to type E= 1.96 square root of .6996- .3004 / 1002 in my calculator? Thanks
 
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It's not clear from what you wrote what it is you want to calculate, so until we figure that out, it's going to be difficult to show you what you need to enter into your calculator. To clarify what you wrote, you really need to use parentheses.

Is this it?
[tex]1.96\sqrt{.6996 - \frac{.3004}{1002}}[/tex]

Or is this it?
[tex]1.96\sqrt{\frac{.6996 - .3004}{1002}}[/tex]

Or maybe this?
[tex]1.96\sqrt{.6996} - \frac{.3004}{1002}}[/tex]

There might be some other possibilities I didn't list.
 
Im trying to calculate E= 1.96 square root of .6996- .3004 / 1002 = .0284. I keep getting a different answer. I don't know if I should use parentheses on the top part or the whole problem.
 
It doesn't help if you repeat the same thing you said in your first post. Did you read my reply? Your question is so unclear I can't tell what you're trying to calculate.
 

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