Question

part b: what assumptions need to be made about this population?

0.3.20-1 Question Help The following data show the number of hours per day 12 adults spent in front of screens watching television-related content Complete parts a and below. 1.4 4.7 3.8 4.8 74 6.50 5.6 2.1 5.2 1.8 29 8.1 a. Construct a 90% confidence interval to estimate the average number of hours per day adults spend in front of screens watching television-related content The 90% confidence interval to estimate the average number of hours per day adults spend in front of screens watching television-related content is from hours to hours. (Round to two decimal places as needed.) ate

Answer 1

Ansi Given Table | data, number of hours per day 2 adults. na 12 datai 1.4 4.7 3.8 4.8 7.4 6.5 5.6 2.1 5.2 1.8 2.9 8.1.. Q. to estimate average number 984 confidence of hours per level day. (x -x) mean (x-8) No of adults 9.765 -3.125 0.175 -0.725 0.030 0.525 0.075 8.265 3.900 0.275 2.875 1.975 1.075 -2425 0.675 5.6 1155 5. 880 0.455 - 2.725 7.425 2.9 -1.625 2.640 3.575 12.780 (mean = 4.525 Toral = 52.895

Why Coopt mean (8) = . ||+4.147. 433.atJ+ Ft+2+|+ .2 8+ 2 ++f• 1 |, te) - 543 2 42: LA 1x WD) Ky (0 ව - , la la la la la |- | - 4:/25 - - 3:/2IT. 47 - 4x2x 3 0-447 3.4 - 425 -0-727 | 2.0 - 4K2 2 0- 271 7.0 - 4.52 = 2, 3r 6.- -19( 5 (1345 56 - 4,IA 2 (1931 }}}}} 2 -3421 52 - 4% ක 0- 35 1.0 – - 41 25 2. අ - | D ) - P4 6 2 9.) - | Kur 3: ට ම ම ම ම ම ම ම මවටම la la la la lx la

9.465 Now, for 0 - 14->) Ⓡ = 0.030 ② = 0.525 0.08 Ő = 8.265 © 3.900 © - Hiss 8.880 ☺ - 0-415 m = Filler © = 2.640 0-41 12.780. NOW, Standard variance (8) = [ (x-1) (+) = 52.995 n- = 52.895 52.895 a 4.808. Standard deviation (5) - rsz 74.808 deviation (s) = 2.192. Standard

Standard enor of mean Sx) - 2192 2.19 3.uby 70.632 for 90% CI, and df = (1+2 degree of freedom it. df = 112-1) = 11, for 909. , and df =1), value of t = 14960 (estimated value .; margin of Emor (E) = t x stendard emor, 174608 0.632 1950 - Now, lower confidence bound = Sample mean - margin of error 11310 4.595- 3.39 upper confidence band - Sample meant margin of error a 4.525 +1.1390 § 5.66. [ If the above information feel good for you, then please let us know by giving a like Phane you]