Q1) The monthly electrical utility bills of all customers for Boazii Elektrik are known to be...

 

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Q1) The monthly electrical utility bills of all customers for Boğaziçi Elektrik are known to be distribut distribution with a standard deviation of o = 20 TL. Assume you select a sample of n = 100 customers and the sample mean is found to be 102 TL. Construct a 98% confidence interval estimate for the mean based on this sample. What is the critical value to construct the confidence interval ? z = What is the lower confidence limit? Time left 0:29:53 What is the upper confidence limit If you want to construct a 90% confidence interval estimate within ± 3 TL, what should the sample size be? Required sample size n = Q1) The monthly electrical utility bills of all customers for Boğaziçi Elektrik are known to be distribut distribution with a standard deviation of o = 20 TL. Assume you select a sample of n = 100 customers and the sample mean is found to be 102 TL. Construct a 98% confidence interval estimate for the mean based on this sample. What is the critical value to construct the confidence interval ? z = What is the lower confidence limit? Time left 0:29:53 What is the upper confidence limit If you want to construct a 90% confidence interval estimate within ± 3 TL, what should the sample size be? Required sample size n =

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Given We know that will be CI CI Je Z02 ZCritical at 98 confidence interval will be By 2t... View the full answer