Is there a relation between the age difference betweenhusband/wives and the percent of a country that isliterate? Researchers found theleast-squares regression between age difference(husband age minus wifeage), y, and literacy rate(percent of the population that isliterate), x is y = -0.0594x+7.5. The model applied for 25

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.

For every unit increase in

age difference,

literacy rate,

the

literacy rate

age difference

falls by

nothing

units, on average.

(Type an integer or decimal. Do notround.)

(b) Does it make sense to interpret they-intercept? Explain. Choose the correct answer below.

A.

it makes sense to interpret they-intercept because anx-value of 0 is within the realm of possibilities.

B.

it does not make sense to interpret they-intercept because anx-value of 0 is outside the scope of the model.

C.

Nolong dash

it does not make sense to interpret they-intercept because anx-value of 0 is impossible.

D.

Nolong dash

it does not make sense to interpret they-intercept because ay-value of 0 is impossible.

E.

Nolong dash

it does not make sense to interpret they-intercept because ay-value of 0 is outside the scope of the model.

(c) Predict the age difference betweenhusband/wife in a country where the literacy rate is 27

27 percent.

nothing

years (Round to one decimal place asneeded.)

(d) Would it make sense to use this model to predict the age difference betweenhusband/wife in a country where the literacy rate is 17

17%?

A.

Yeslong dash

it makes sense because ay-value of 17

17 is within the realm of possibilities and within the scope of the model.

B.

Nolong dash

it does not make sense because ay-value of 17

17 is outside the scope of the model.

C.

Nolong dash

it does not make sense because anx-value of 17

17 is outside the scope of the model.

D.

Yeslong dash

it makes sense because anx-value of 17

17 is within the realm of possibilities and within the scope of the model.

(e) The literacy rate in a country is 98

98% and the age difference between husbands and wives is 2

2 years

years. Is this age difference above or below the average age difference among all countries whose literacy rate is 98

98%? Select the correct choice below and fill in the answer

(Round to one decimal place asneeded.)

A.

Above

the average age difference among all countries whose literacy rate is 98

98% is

nothing

years.