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(Solved): A random samples of 25 executives spent on the average $175.36 with standard deviation of $16.94 on ...
A random samples of 25 executives spent on the average $175.36 with standard deviation of $16.94 on entertaining guests. Find a 95%
confidence interval for the true standard deviation of such expenses using small sample technique based on Chi-square distribution.
13.23-23.57
12.47-18.96
14.15-22.56
13.01-20.58