Use the following information to answer questions Q17 -Q18 A computer manufacturer conducted a satisfaction study on its own computer brand, Data from 300 customers were collected. including the customers' personal characteristics, satisfaction towards this brand, and their WTP for a particular computer model of this brand. The data set has the following data items available. ID: The respondent's ID number (value: 1-300) WTP: The respondent's willingness-to-pay (WTP) for the particular computer model of this brand (in dollar value) SAT: The respondent's satisfaction towards this brand (rated from 1 (very unsatisfied] to 10 [very satisfied]) SEX: The respondent's gender (value = 0 if female, 1 if male) INC: The respondent's annual income (unit: $1000: e.g. a value 50 means $50,000) The respondent's age is grouped in 4 levels in all: o AGE_L1: 18-30 (it is required that the survey participants need to be at least 18 years old]. AGE L2:31-40 AGE L3: 41-50 o AGE_L4: 51 or older Variable names are in bold in the list above. including ID. WTP, SAT. SEX INC. AGE_L1. AGE_12. AGE_L3, and AGE_L4. A regression analysis is conducted using a part of the data items. The regression is overall worthwhile and explains a satisfactory level of variance. The dependent variable is WTP, and the coefficient estimations are shown as below, coeff std err t stat p-value lower upper vif Intercept 50.00 5.486 10.420 0.000 39.671 60.881 SAT 35.00 2.206 5.552 0.000 30.905 39.587 3.834 SAT*SEX 5.50 1.748 2.116 0.003 2.258 9.140 2.825 SAT*INC 0.50 0.061 6.100 0.000 0.253 0.724 3.427 SEX 15.00 2.210 8.547 0.000 12.340 18.009 2.081 AGE L2 15.00 2.250 2.656 0.000 10.570 19.427 1.337 What is the expected WTP of a female customer (age 35, income $68,000 per year) with a satisfaction level of rating 87 Choose the number that is the closest to the expected WTP Select one: O a. $450 b. $550 Oe $620 $660 e. $680 Which of the following statements is correct? Select one O a Customers in age group level 2 (31-40) are willing to pay $15 more than customers in age group level 1 (18-30) @ b. Customers in age group level 2 (31-40) are willing to pay $15 more than customers in other age groups O & Holding other variables the same. customers in age group level 2 (31-40) are willing to pay $15 more than customers in age group level 1 (18-30) O) d. Holding other variables the same, customers in age group level 2 (31-40) are willing to pay $15 more than customers in 1:28 PM other age groups 18"CA ENG BF12/2021