nternet service: An Internet service provider sampled  538  customers and found that  78  of them experienced an interruption in high-speed service during the previous month.  (b) Construct an  80%  confidence interval for the proportion of all customers who experienced an interruption. Round the answer to at least three decimal places.   An  80%  confidence interval for the proportion of all customers who experienced an

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A: For 95% confidence intervalα=1-CI=1-0.95=0.05So, zα2=z0.052=z0.025=1.96

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A: For 90% confidence intervalα=1-CI=1-0.90=0.10So, zα2=z0.102=z0.05=1.645

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.