the electric cooperative needs to know the mean household usage of electricity by its non-commercial customers in kwh per day. they would like the estimate to have a maximum error of 0.1 kwh. a previous study found that for an average family the variance is 5.76 kwh and the mean is 16.2 kwh per day. if they are using a 80% level of confidence, how large of a sample is required to estimate the mean usage of electricity?​

Arealtor is studying the graph above, which shows the expected value of properties in her area over the next 24 years. if t represents the number of years after 2014, in what year should the increase in property values start to slow down? a. 2008 b. 2018 c. 2022 d. 2030

Which of the following best describes the difference between “autobiography” and “memoir”? a. autobiography is written about the author's own interpretation of events; memoir is a written interpretation of events. b. memoir covers a particular time in the writer’s life or recounts life events around one or two themes; autobiography covers the entire story of the author's life and has multiple themes. c. autobiography covers the entire story of the writer's life and has multiple themes; memoir is a shorter written work with one theme. d. autobiography covers entire story of the writer's life and has multiple themes; memoir is the writer’s random memories about past experiences.

What is the amount that shareholders contribute