help answer this question in r using this directory to access the file "c:/users/olivier/Downloads"

PRODUCTION The following questions relate to Example 11.10 in MS page 583. The data for this problem & should be downloaded and brought into R's workspace. > df head(df) Obs Day Y. Hours X1.Mail X2. Gifts X3. Charge X4. Returns X5. Checks X6.Misc X7. Tickets 1 M 128.5 7781 100 886 235 644 56 737 2 113.6 7004 110 962 388 589 57 1029 3 146.6 7267 61 1342 398 1081 59 830 124.3 2129 102 1153 457 891 1468 100.4 4878 45 803 577 537 49 335 LA T 119.2 3999 144 1127 345 563 64 918 E(Y) = Bo + B121 + B2x2 + B3x3 + BAZ4 + BEX'5 Question 1 PRODUCTION Perform a classical analysis on the data as in Exercise 11.10 except use R. Find a 90% confidence (L,U) interval for 81, submit L to 4 decimal places Question 2 PRODUCTION Using a classical analysis what is the numerical value of multiple R squared? Submit below to 4 decimal places