Question

STA 2023 - 20201 - MW 3:30 - Ref# 652682 Homework: Section 7.2 Homework Sigma Unknown Save HW Score: 84.62%, 11 of 13 pts 13 of 13 (12 complete) Score: 0 of 1 pt *7.4.29 E Question Help Twelve different video games showing substance use were observed and the duration times of game play (in seconds) are listed below. The design of the study justifies the assumption that the sample can be treated as a simple random sample Use the data to construct a 99% confidence interval estimate of u, the mean duration of game play. 4056 4655 4043 3894 4019 4804 5003 4332 3853 4314 4826 4316 Click here to view at distribution table Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table What is the confidence interval estimate of the population mean u? (Round to one decimal place as needed)

Answer 1

Solution 4056 38 94, 3853 4019, 4314, 4804, 465S, 4043, 2003, 4826, 4332 4316 No exis = 1405 6+ 3894+3853 +4019 + 4314 + 4804 4655t4043t soo3+4826+4332 + 4316 a 12 43242.92 mean -7 = 4342.92 Exit 40567389473853²7 4019²+ 4314748062 +4655²+4043²7 5003²7 4826²+ 4332²7 - 48162 Exir = 228030593 Exi² na ni 228030 593-124342.92 . s² - 154467.5894 S2 J194467.5894 = 393.023 6 .: 99-1. confidence interval in cxt tn-l as ) (4342.92 + t12-1,0.01 x 393.02 367 عالی 010

YOUVA Date: 6 4342.92 + buonos x 113.4562 (4342.92 + 3.49668113.456) - 61,0.0052 3.4904 from starinca 1 table ( 4342.92 - 396.71, 4342.92+ 396-7) C3946.21, 4739.63 ) 3946. 22 M24739.6