Malone Gordon
02/01/2024 · Primary School
Use the given information to find the number of degrees of freedom, the critical values \( \chi_{L}^{2} \) and \( \chi_{R}^{2} \), and the confidence interval estimate of \( \sigma \). It is reasonable to assume that a simple random sample has been selected from a population with a normal distribution. White Blood Counts of Women \( 99 \% \) confidence; \( n=149, s=1.97(1000 \) cells \( / \mu \mathrm{L}) \). \( \mathrm{df}=148 \) (Type a whole number.) \( \chi_{\mathrm{L}}^{2}=\square \) (Round to two decimal places as needed.)
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Degrees of freedom: 148
\( \chi_{L}^{2} \approx 174.59 \)
\( \chi_{R}^{2} \approx 127.32 \)
Confidence interval estimate of \( \sigma \): \( (1.81, 2.12) \)
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