What is the formula for the confidence interval for mu with sigma unknown A x overbar plus or minus z Subscript 1 minus alpha divided by 2 Baseline times StartFraction sigma Over StartRoot n EndRoot EndFraction x overbar plus or minus z Subscript 1 minus alpha divided by 2 Baseline times StartFraction sigma Over StartRoot n EndRoot EndFractionx z 1 2 n B x overbar plus or minus t Subscript 1 minus alpha divided by 2 n minus 1 Baseline times StartFraction s Over StartRoot n EndRoot EndFraction x overbar plus or minus t Subscript 1 minus alpha divided by 2 n minus 1 Baseline times StartFraction s Over StartRoot n EndRoot EndFractionx t 1 2 n 1 sn C x overbar plus or minus z Subscript 1 minus alpha divided by 2 Baseline times StartFraction s Over StartRoot n EndRoot EndFraction x overbar plus or minus z Subscript 1 minus alpha divided by 2 Baseline times StartFraction s Over StartRoot n EndRoot EndFractionx z 1 2 sn D x overbar plus or minus t Subscript 1 minus alpha divided by 2 n minus 1 Baseline times StartFraction sigma Over StartRoot n EndRoot EndFraction x overbar plus or minus t Subscript 1 minus alpha divided by 2 n minus 1 Baseline times StartFraction sigma Over StartRoot n EndRoot EndFraction

Question

What is the formula for the confidence interval for mu with sigma unknown   A   x overbar plus or minus z Subscript 1 minus alpha divided by 2 Baseline times StartFraction sigma Over StartRoot n EndRoot EndFraction x overbar plus or minus z Subscript 1 minus alpha divided by 2 Baseline times StartFraction sigma Over StartRoot n EndRoot EndFractionx z 1   2 n B   x overbar plus or minus t Subscript 1 minus alpha divided by 2   n minus 1 Baseline times StartFraction s Over StartRoot n EndRoot EndFraction x overbar plus or minus t Subscript 1 minus alpha divided by 2   n minus 1 Baseline times StartFraction s Over StartRoot n EndRoot EndFractionx t 1   2   n 1 sn C   x overbar plus or minus z Subscript 1 minus alpha divided by 2 Baseline times StartFraction s Over StartRoot n EndRoot EndFraction x overbar plus or minus z Subscript 1 minus alpha divided by 2 Baseline times StartFraction s Over StartRoot n EndRoot EndFractionx z 1   2 sn D   x overbar plus or minus t Subscript 1 minus alpha divided by 2   n minus 1 Baseline times StartFraction sigma Over StartRoot n EndRoot EndFraction x overbar plus or minus t Subscript 1 minus alpha divided by 2   n minus 1 Baseline times StartFraction sigma Over StartRoot n EndRoot EndFraction

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What is the formula for the confidence interval for mu with sigma unknown ? A . x overbar plus or minus z Subscript 1 minus

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