TH 1740: Section: 91: Intro to Stat: Online Summer 18 Matilda Zoker 7/5/18 703 P
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Question
TH 1740: Section: 91: Intro to Stat: Online Summer 18 Matilda Zoker 7/5/18 703 PM Homework: Homework Chapter 7- Estimates & Sample Sizes Score: 0 of 1 pt HW Scor re: 10% 2 of 20 pt 7.3.20 Twelve different video games showing s justfies the duration of game play and the duration times of game play (in ) are isted below. The design of the study that the sample can be treated izs a simple random sample Use the data to construct a 95% condence i nterval e ps, i mean 4050 3882 4024 4324 4823 4548 4041 50134816 4326 4313 Click here to vien a here to view page standard normal dis tribution table. What is the confidence interval estimate of the population mean p? Round to one decimal place as needed) All parts showing This course (MATH 1740Explanation / Answer
solution:-
given that mean = 4343 , standard deviation = 396.13
confidence interval formula = x +/- t * s / sqrt(n)
95 % confidence with df = 11 is t = 2.201
=> 4343 +/- 2.201 * 396.13 / sqrt(12)
=> (4091.3 , 4594.7)
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