Question

4. To study the effects of pesticides on birds, a scientist randomly and equally allocates N 65 chicks to five diets (a control and four diets each with a different pesticide included). After a month, each chick's calcium content (mg) in 2 cm length of bone is measured resulting in the following data: 3/3 Pesticides Control 11 Mean5411.00 11.42 11.44 11.28 Std Dev. 0.27 0.47 0.3 0.42 0.31 (b) What is the estimate of the error variance fron this data? (Bonus) Create a 95% lower confidence bound for the error variance. Hint: Use Question 7. (c) If you knew that there is no difference in the population means, how would your answers for b) change? Recalculate the confidence bound for bonus points

Answer 1

Uwdlenstaudling ustim A Sdentist Raudey diek, ie a month Caleium Conlenh (m in fiue but Equally allosiates 5 chicks to Cchicks tor eath ich Aglur is maawad. Bone Coubrel Pestieides Mean 2 Caluum outeuh mg) 11-60 t1-28 1.42 1-44 Std. Boviedron In Calcium Lovleut 0-31 027 0-47 D-3) 0-42 Now, Lonuiug to tthe qustion (by Error Vauuano, otoraliua to the giuan datails cannot ba Lalulated directly Only Hera, ih is gfuan in tui louo Loutidan bound faradbe will giue the eutoY vouwanee an estimation can ba dono quution that ereatiug Theretore, by usiug tleo tormula okan tho population terdard daahion s guon oulialauto lukewa Coutralowus Beand) wlasu sampl wian 6 Standard aviatòn Saupk zValus tnsm e staualard Normal Dighbukion for Hour desired Loutialanco lavel size n-

Tuerr aur SOM Au-caleulaled valus tor z, bonad an H Un domand o quston A S die taufidanto level vallue AJL is w POJ645 asy 98f 96 23 Fox ouatiug a Jouoe tautidous lavel, z-valua usil b uegatie) wlarear tor a Wighou couficlano lovel, z-valus wil ho pasttivo Nauo, X 0424 Nou D 27 3.87 11.S4 .96 x0069) last d 11.4 (. b121) 96X 6 1L-0234 CI = 10.363 196X 0-3) 3-87 1-42-0. 15 CTニ 1-263

44- . 46 X uLV 3 84 (96 X 0-1o 17 Myk0-211 1-229 CI U-28- t.96 X 6.3) 3-81 28 - A96 X 0-0 & 0 28-0.1 10-124 -V ditferent Aboe auta eunor Vasuanus..I papulation difeeanus in tho we kueus thah hares aura no maan.t.e no std.Levicton puan formula wil he Thon, ths only As thase Nalues avto CIT estiwatine) 11.54-1.9L CIA 9.58 Be W A-96

\1-42-1-9 1144-1-9 9.48 CI l1.28 -1-96 9-32 Wkad my explasination, plaase ghe a thumbs- VP. Tuank Mou