Ortega Grant
03/15/2024 · Senior High 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 ass that a simple random sample has been selected from a population with a normal distribution. White Blood Counts of Women \( 99 \% \) confidence; \( n=148, s=1.97 \) ( 1000 cells \( / \mu \mathrm{L} \) ). \( \mathrm{df}=147 \) (Type a whole number.) \( \chi_{\mathrm{L}}^{2}=\square \) (Round to two decimal places as needed.)
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Degrees of Freedom: \( \text{df} = 147 \)
Lower Critical Value: \( \chi_{L}^{2} \approx 173.76 \)
Upper Critical Value: \( \chi_{R}^{2} \approx 124.34 \)
Confidence Interval Estimate of \( \sigma \): \( (1.81, 2.14) \)
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