Question

Is there a relation between the age difference between husband/wives and the percent of a country that is literate? Researchers found the least-squares regression between age difference (husband age minus wife age), y, and literacy rate (percent of the population that is literate), x, is y -0.0466x+8.2. The model applied for 16sxs 100. Complete parts (a) through (e) below (a) Interpret the slope. Select the correct choice below and fill in the answer box to complete your choice. falls byunits, on average. the For every unit increase in (Type an integer or decimal. Do not round.) (b) Does it make sense to interpret the y-intercept? Explain. Choose the correct answer below. O A. Yes-it makes sense to interpret the y-intercept because an x-value of 0 is within the realm of possibilities. O B. No-it does not make sense to interpret the y-intercept because a y-value of 0 is outside the scope of the model. O C. No-it does not make sense to interpret the y-intercept because an x-value of 0 is outside the scope of the model.

Answer 1

a)

for every unit increase in literacy rate difference age difference falls by 0.0466 units on average

b) option C is correct

c) predicted value =-0.0466*39+8.2 =6.4

d)

option B is correct

e)

option A: below -- ............is 3.6 years