Mathematics, 13.11.2019 03:31 keshjdjsjs
The head librarian at the library of congress has asked her assistant for an interval estimate of the mean number of books checked out each day. the assistant provides the following interval estimate: from 740 to 920 books per day. if the head librarian knows that the population standard deviation is 150 books checked out per day, and she asked her assistant to use 25 days of data to construct the interval estimate, what confidence level can she attach to the interval estimate? a) 99.7% b) 99.0% c) 98.0% d) 95.4%
Answers: 1
Mathematics, 22.06.2019 01:00
Ameteorologist is studying the monthly rainfall in a section of the brazilian rainforest. she recorded the monthly rainfall, in inches, for last year. they were: 10.4, 10.3, 11.7, 11.1, 8.0, 4.4, 2.6, 1.8, 2.5, 4.4, 7.3, 9.5 fill in the missing values in the formula. what is the variance?
Answers: 1
Mathematics, 22.06.2019 02:30
Solve the system of equations. 2x-2y=-4 and x+y=8. show work
Answers: 1
The head librarian at the library of congress has asked her assistant for an interval estimate of th...
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