Questions in this assignment are based on a data frame calledFatMice18, which contains data for 18 mice. Mice were randomly assigned to one of two light treatments:LD(anormal light/dark cycle) orLL(light in the day and light at night as well). The researchers tracked the weight gained by each mouse (in grams) over four weeks of this light treatment.

M Your Task Do Nerdify | | Mi Inbox (22 Mi Inbox (9) |Mi Your Task |Do Nerdify | | The 3 Bra Paraphraseogle Quiz X Homewo G Gramma + X C https://calstatela.instructure.com/courses/73494/quizzes/295708/take mouse (III glamis) Over Toul weeks Of THIS light treatment. CAL STATE LA Spring Semester 2022 The variables in the data frame are: Home . Light Light treatment: LD = normal light/dark cycle or LL = bright light at night Announcements wgtGain4 Weight gain in grams over a four week period Account Grades . cageloc The location of the cage in the research lab (on the top row or bottom row) People Dashboard Here's the result of running head(FatMice18) : Modules Courses Reading List Light WgtGain4 CageLoc LL 10 top row LL 10 top row LL 11 bottom row QUIA WNA Calendar LL 9 bottom row LL 12 top row LL 9 bottom row Inbox History Studio D Question 1 3 pts Help 1. If you've calculated the variance for WgtGain4 , what have you found? 53.F LO W 12:29 AM 3/11/2022 2 ClearM Your Task |Do Nerdify | | Mi Inbox (22 |Mi Inbox (9) |M Your Task|Do Nerdify | | The 3 Bra Paraphrasegle Quiz X Homewo G Gramma + X C https://calstatela.instructure.com/courses/73494/quizzes/295708/take CAL STATE LA Spring Semester 2022 O Roughly the average residual from the empty model, in grams Home O Roughly the average squared residual from the empty model, in squared grams Announcements O Roughly the total squared residual from the empty model, in squared grams Account Grades O The sum of the residuals from the mean People Dashboard Modules Courses Reading List D Question 2 3 pts Calendar 2. If the z score for a mouse's weight gain is -0.7, what does that mean? O The mouse's weight gain is lower than 70% of the entire sample. Inbox O The mouse's weight gain is 0.7 standard deviations lower than the mean of WgtGain4. History O The mouse's weight gain is 70% lower than the average mouse in the distribution. Studio O This mouse lost 0.7 grams of weight. Help 53.F O W 12:30 AM Clear 3/11/2022 2M Your Task Do Nerdify | |Mi Inbox (22 |M Inbox (9) |M Your Task |Do Nerdify | | The 3 Bra Paraphragmgle Quiz X Homewo G Gramma + X C https://calstatela.instructure.com/courses/73494/quizzes/295708/take CAL STATE LA Spring Semester 2022 O This mouse lost 0.7 grams of weight. Home Announcements Account Grades D Question 3 3 pts People Dashboard 3. Using the FatMice18 data frame, run favstats on wgtGain4 ). At what Modules value would the sum of squared errors (sum of squares) be lowest? Courses Reading List O 8.39 Calendar 0 3 O You can never be sure of the value at which the sum of squares would be lowest. Inbox Oo History Studio D Question 4 3 pts Help 4. Fit the NULL or empty model of wgtGain4 in the FatMice18 data frame. 53.F O 12:30 AM Clear 3/11/2022 2M Your Task |Do Nerdify | | Mi Inbox (22 |Mi Inbox (9) |M Your Task|Do Nerdify | | The 3 Bra Paraphragmgle Quiz X Homewo G Gramma + X C https://calstatela.instructure.com/courses/73494/quizzes/295708/take CAL STATE LA Spring Semester 2022 4. Fit the NULL or empty model of (wgtGain4 ) in the FatMice18) data frame. Home What is the sum of squares for this model? Announcements Account Grades O 17 People Oo Dashboard Modules 10.957 O 186.28 Courses Reading List Calendar D Question 5 3 pts Inbox 5. How much is the standard deviation for (wgtGain4 )? History O 8.39 Studio O 10.96 O 2.29 Help O 3.31 53.F W 12:31 AM Clear 3/11/2022 2