Math Problem Statement
Use the given information to find the number of degrees of freedom, the critical values chi Subscript Upper L Superscript 2χ2L and chi Subscript Upper R Superscript 2χ2R, and the confidence interval estimate of sigmaσ. 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 80% confidence; nequals=146, sequals=1.99 (1000 cells/muμL). Question content area bottom Part 1 dfequals=145 (Type a whole number.) Part 2 chi Subscript Upper L Superscript 2χ2Lequals=123.65 (Round to two decimal places as needed.) Part 3 chi Subscript Upper R Superscript 2χ2Requals=167.21 (Round to two decimal places as needed.) Part 4 The confidence interval estimate of sigmaσ is enter your response here (1000 cells/muμL)less than<sigmaσless than<enter your response here (1000 cells/muμL). (Round to two decimal places as needed.)
Solution
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Math Problem Analysis
Mathematical Concepts
Statistics
Chi-square distribution
Confidence intervals
Formulas
Degrees of freedom formula
Chi-square critical values formula
Confidence interval for standard deviation formula
Theorems
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Suitable Grade Level
College
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