Use the One-Standard-Deviation Chi-Square Interval Procedure to Obtain the Specified $9.8$

Use the one-standard-deviation chi-square interval procedure to obtain the specified confidence interval for thepopulation standard deviation Ϭ. Assume that the population has a normal distribution.
-The mean systolic blood pressure for a random sample of 28 women aged 18-24 is 114.8 mm Hg and the standard deviation is 12.6 mm Hg. Construct a 90% confidence interval for the standard
Deviation Ϭ, of the systolic blood pressures of all women aged 18-24.

A) $9.8$ to $17.6 \mathrm {~mm} \mathrm { Hg }$
B) $10.2$ to $15.9 \mathrm {~mm} \mathrm { Hg }$
C) $10.8$ to $15.4 \mathrm {~mm} \mathrm { Hg }$
D) $10.3$ to $16.3 \mathrm {~mm} \mathrm { Hg }$

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