Estimate the Standard Deviation in Calories for These Randomly Selected $328.266 < \sigma ^ { 2 } < 1621.082$

question 20

Multiple Choice

Estimate the standard deviation in calories for these randomly selected standard-size candy bars with 95% confidence. (The number of calories is listed for each.) Assume the variable is
Normally distributed.
218 219 212 225 271 266 246
211 238 250 281 227 278 260

• A) \(328.266 < \sigma ^ { 2 } < 1621.082\)
• \(18.1 < \sigma < 40.3\)
• B) \(14.145 < \sigma ^ { 2 } < 69.853\)
• \(3.8 < \sigma < 8.4\)
• C) \(13.135 < \sigma ^ { 2 } < 64.863\)
• \(3.6 < \sigma < 8.1\)
• D) \(353.518 < \sigma ^ { 2 } < 1745.781\)
• \(18.8 < \sigma < 41.8\)

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