8 Cooking gas tanks were randomly weighed. Find the 99% confidence intervals for the standard deviation of these weights. A.)0.7873 ≤ σ ≤ 0.8736 B.)0.1856 ≤ σ ≤ 0.8400 C.)0.4893 ≤ σ ≤ 0.9028

Q: 5 ± $39.53 b. $127.95 ± $7.45 c. $127.95 ± $4.87 d. $127.95 ± $6.25 e. $127.95 ± $30.81

A: As sample standard deviation is unknown, the critical value can be calculated from student t…

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A: Sample proportion = 868/1523 = 0.57 z-critical value = 1.645

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A: HERE use basic of confidence interval '

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A: Yes, all conditions have been met. A