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 = -0.0569x + 8.5. The model applied for 23 ≤ x ≤ 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 falls by units, on average. (Type an integer or decimal. Do not round.) (b) Does it make sense to interpret the y-intercept? Explain. Choose the correct answer below. the O A. Yes it makes sense to interpret the y-intercept because an x-value of 0 is within the realm of possibilities. OB. No-it does not make sense to interpret the y-intercept because a y-value of 0 is impossible. OC. No-it does not make sense to interpret the y-intercept because an x-value of 0 is outside the scope of the model. O D. No-it does not make sense to interpret the y-intercept because an x-value of 0 is impossible. O E. No-it does not make sense to interpret the y-intercept because a y-value of 0 is outside the scope of the model. (c) Predict the age difference between husband/wife in a country where the literacy rate is 38 percent. years (Round to one decimal place as needed.) (d) Would it make sense to use this model to predict the age difference between husband/wife in a country where the literacy rate is 18%? O A. No-it does not make sense because a y-value of 18 is outside the scope of the model. OB. Yes it makes sense because a y-value of 18 is within the realm of possibilities and within the scope of the model. OC. No-it does not make sense because an x-value of 18 is outside the scope of the model. O D. Yes it makes sense because an x-value of 18 is within the realm of possibilities and within the scope of the model. (e) The literacy rate in a country is 99% and the age difference between husbands and wives is 2 years. Is this age difference above or below the predicted average age difference among all countries whose literacy rate is 99%? Select the correct choice below and fill in the answer box to complete your choice
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 = -0.0569x + 8.5. The model applied for 23 ≤ x ≤ 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 falls by units, on average. (Type an integer or decimal. Do not round.) (b) Does it make sense to interpret the y-intercept? Explain. Choose the correct answer below. the O A. Yes it makes sense to interpret the y-intercept because an x-value of 0 is within the realm of possibilities. OB. No-it does not make sense to interpret the y-intercept because a y-value of 0 is impossible. OC. No-it does not make sense to interpret the y-intercept because an x-value of 0 is outside the scope of the model. O D. No-it does not make sense to interpret the y-intercept because an x-value of 0 is impossible. O E. No-it does not make sense to interpret the y-intercept because a y-value of 0 is outside the scope of the model. (c) Predict the age difference between husband/wife in a country where the literacy rate is 38 percent. years (Round to one decimal place as needed.) (d) Would it make sense to use this model to predict the age difference between husband/wife in a country where the literacy rate is 18%? O A. No-it does not make sense because a y-value of 18 is outside the scope of the model. OB. Yes it makes sense because a y-value of 18 is within the realm of possibilities and within the scope of the model. OC. No-it does not make sense because an x-value of 18 is outside the scope of the model. O D. Yes it makes sense because an x-value of 18 is within the realm of possibilities and within the scope of the model. (e) The literacy rate in a country is 99% and the age difference between husbands and wives is 2 years. Is this age difference above or below the predicted average age difference among all countries whose literacy rate is 99%? Select the correct choice below and fill in the answer box to complete your choice
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text: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 ŷ= -0.0569x + 8.5. The model
applied for 23 ≤ x ≤ 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
falls by units, on average.
(Type an integer or decimal. Do not round.)
(b) Does it make sense to interpret the y-intercept? Explain. Choose the correct answer below.
▼ the
O A. Yes-it makes sense to interpret the y-intercept because an x-value of 0 is within the realm of possibilities.
OB. No-it does not make sense to interpret the y-intercept because a y-value of 0 is impossible.
OC.
No-it does not make sense to interpret the y-intercept because an x-value of 0 is outside the scope of the
model.
O D.
No-it does not make sense to interpret the y-intercept because an x-value of 0 is impossible.
O E. No-it does not make sense to interpret the y-intercept because a y-value of 0 is outside the scope of the
model.
(c) Predict the age difference between husband/wife in a country where the literacy rate is 38 percent.
years (Round to one decimal place as needed.)
(d) Would it make sense to use this model to predict the age difference between husband/wife in a country
where the literacy rate is 18%?
O A. No-it does not make sense because a y-value of 18 is outside the scope of the model.
OB. Yes-it makes sense because a y-value of 18 is within the realm of possibilities and within the scope of the
model.
O C. No-it does not make sense because an x-value of 18 is outside the scope of the model.
O D. Yes-it makes sense because an x-value of 18 is within the realm of possibilities and within the scope of the
model.
(e) The literacy rate in a country is 99% and the age difference between husbands and wives is 2 years. Is
this age difference above or below the predicted average age difference among all countries whose literacy
rate is 99% ? Select the correct choice below and fill in the answer box to complete your choice.
(Round to one decimal place as needed.)
O A. Below-the predicted average age difference among all countries whose literacy rate is 99% is
OB. Above-the predicted average age difference among all countries whose literacy rate is 99% is
years.
years.
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