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Is a 95% confidence interval twice as wide as a 47.5% confidence interval? Watch

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    A) twice as wide
    B) more than twice as wide
    C) less than twice as wide

    And why?
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    (Original post by Breakingbank)
    A) twice as wide
    B) more than twice as wide
    C) less than twice as wide

    And why?
    95% has width: 2 \times 1.96 \times \frac{\sigma }{\sqrt{n}} - what's the width of the 47.5% interval?
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    (Original post by Breakingbank)
    A) twice as wide
    B) more than twice as wide
    C) less than twice as wide

    And why?
    Are you being asked this question as a school student or as a university student? If the former, then Zacken has given you the appropriate method. If the latter, then the answer is "it's complicated" - and we'd need a bit more context to answer it.
 
 
 
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