Suppose X1 is a numerical variable and X2 is a dummy variable with two categones and the regression equaton lor a sample of n=23 is Y^1=4+3Xn+2X2. a. Interpret the regression coefficient associated with variable X1. b. Interpet the regression coefficient associated with variable x2 c. Suppose that the tsine test statistic for tosting the contribution of variabie x2 is 1.02 . Al the 0.01 level of significance, is there evidence that variable X2 makes a significant cuntribution to the model? a. Interpret the regression coefficent associated with variabie xi. Holding constant the etlect of for each increase of cne unit in the predicted mean value of Y by a positive change of unts). b. Interpret the regression coefficent associated with variable x2 Halding conatant the value of thanging the value of from to is estimatod to the predicted mean value of Y by a postive change of unis) c. Determine the nuil and atemative hypotheses. State the lest statistic. tsTT= (Round to two decinal places as needed) Find the p-value. p-value : (Round to three decimal places as neoded.) Stase the conclusion. Choose the correct answer below. A. Do not reject the. There is insulficiect evidence at the 0.01 level of significance that B. Do not reject H0. There is sufficient evidence at the 0.01 level of significance that variabie variable x2 makes a significant contibution to the model. x2 makes a sigrificant contribution to the modelSuppose X1 is a numerical variable and X2 is a dummy variable with two categories and the regression equation for a sample of n=23 is Y1=4+3X1+2X2. a. Interpret the regression coeflicient associated with variable x1. b. Interpret the regression coefficient associated with variable x2. c. Suppose that the tsw test statistic for testing the contribution of variable X2 is 1.02 . At the 0.01 level of significance, is there evidence that variabie X2 makes a significant contribution to the moden Holding constant the estect of for each increase of one unt in the predicted mean value of Y. by a positive change of unit(s). b. Interpret the regression coefficient associated wht variable X2. Holding constant the value of changing the value of from to is estmated to the predicted mean value of Y by a poseve change of unit(s) c. Determine the nuil and aliemative hypotheses. State the test statintio. Stwe" (Round to two decimal places as needed) Find the p.yalue p.value : (Round to theee decimal places as neesed) Stale the condution. Choose the correct answer bolow. A. Do not reject the There is inaulicient evidence at the 0.01 level of significance that B. Do not reject re. There is sufficient endence at the 0.01 level of significance that varable: varlable X2 makes a significant contribution to the model. X2 makes a signtcant contribubon to the model. c. Reject Ho There is insufficent evict thce at eve 0.91 level of sighifeance that variabio x2. D. Reject H0. There is witcient evidence at the 0.0 t levelof signifeance that variable x2 makes a signifi.

1. Suppose X1 is a numerical variable and X2 is a dummy variable with two categones and the
regression equaton lor a sample of n=23 is Y^1=4+3Xn+2X2. a. Interpret the regression coefficient
associated with variable X1. b. Interpet the regression coefficient associated with variable x2 c.
Suppose that the tsine test statistic for tosting the contribution of variabie x2 is 1.02 . Al the 0.01
level of significance, is there evidence that variable X2 makes a significant cuntribution to the
model? a. Interpret the regression coefficent associated with variabie xi. Holding constant the
etlect of for each increase of cne unit in the predicted mean value of Y by a positive change of
unts). b. Interpret the regression coefficent associated with variable x2 Halding conatant the value
of thanging the value of from to is estimatod to the predicted mean value of Y by a postive change
of unis) c. Determine the nuil and atemative hypotheses. State the lest statistic. tsTT= (Round to
two decinal places as needed) Find the p-value. p-value : (Round to three decimal places as
neoded.) Stase the conclusion. Choose the correct answer below. A. Do not reject the. There is
insulficiect evidence at the 0.01 level of significance that B. Do not reject H0. There is sufficient
evidence at the 0.01 level of significance that variabie variable x2 makes a significant contibution
to the model. x2 makes a sigrificant contribution to the modelSuppose X1 is a numerical variable
and X2 is a dummy variable with two categories and the regression equation for a sample of n=23
is Y1=4+3X1+2X2. a. Interpret the regression coeflicient associated with variable x1. b. Interpret
the regression coefficient associated with variable x2. c. Suppose that the tsw test statistic for
testing the contribution of variable X2 is 1.02 . At the 0.01 level of significance, is there evidence
that variabie X2 makes a significant contribution to the moden Holding constant the estect of for
each increase of one unt in the predicted mean value of Y. by a positive change of unit(s). b.
Interpret the regression coefficient associated wht variable X2. Holding constant the value of
changing the value of from to is estmated to the predicted mean value of Y by a poseve change of
unit(s) c. Determine the nuil and aliemative hypotheses. State the test statintio. Stwe" (Round to
two decimal places as needed) Find the p.yalue p.value : (Round to theee decimal places as
neesed) Stale the condution. Choose the correct answer bolow. A. Do not reject the There is
inaulicient evidence at the 0.01 level of significance that B. Do not reject re. There is sufficient
endence at the 0.01 level of significance that varable: varlable X2 makes a significant contribution
to the model. X2 makes a signtcant contribubon to the model. c. Reject Ho There is insufficent
evict thce at eve 0.91 level of sighifeance that variabio x2. D. Reject H0. There is witcient evidence
at the 0.0 t levelof signifeance that variable x2 makes a significant contribution to the model.
makes a sigrificant contritution to the model.