Consider the following data for a dependent variable y and two independent variables, x, and x,. X1 x2 y 30 12 93 47 10 108 25 17 112 51 16 178 40 5 94 51 19 175 74 7 170 36 12 117 59 13 142 76 16 213 The estimated regression equation for these data is ŷ = -20.24 + 2.04x, + 4.78x2. Here, SST = 15,563.6, SSR = 14,417.6, s,, = 0.2488, and = 0.9548. (a) Test for a significant relationship among x,, X2, and y. Use a = 0.05. State the null and alternative hypotheses. O Ho: B, + 0 and ß, = 0 H: B, = 0 and ß, # 0 O Ho: B1< B2 Hgi Pq Z Bz Hoi Bz = B2 = 0 H: One or more of the parameters is not equal to zero. O Ho: B1 > B2 Hai B1 s Bz O Hoi B. + 0 and Ba + 0

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Consider the following data for a dependent variable y and two independent variables, x,
and
X2:
X1 X2
y
30
12
93
47
10
108
25
17
112
51
16
178
40
94
51
19
175
74
7
170
36
12
117
59
13
142
76
16
213
The estimated regression equation for these data is
ŷ = -20.24 + 2.04x, + 4.78x2.
Here, SST =
15,563.6, SSR
14,417.6,
0.2488, and
= 0.9548.
zas
(a) Test for a significant relationship among x,, x2, and y. Use a = 0.05.
State the null and alternative hypotheses.
Ho: B1 + 0 and B2
O and B, + 0
= 0
O Ho: B1 < B2
1
O Ho: P1 = B2 = 0
: One or more of the parameters is not equal to zero.
Hai
O Ho: B1 > B2
Ha: B1 s B2
О Но: В, + 0 and B, # 0
Transcribed Image Text:Consider the following data for a dependent variable y and two independent variables, x, and X2: X1 X2 y 30 12 93 47 10 108 25 17 112 51 16 178 40 94 51 19 175 74 7 170 36 12 117 59 13 142 76 16 213 The estimated regression equation for these data is ŷ = -20.24 + 2.04x, + 4.78x2. Here, SST = 15,563.6, SSR 14,417.6, 0.2488, and = 0.9548. zas (a) Test for a significant relationship among x,, x2, and y. Use a = 0.05. State the null and alternative hypotheses. Ho: B1 + 0 and B2 O and B, + 0 = 0 O Ho: B1 < B2 1 O Ho: P1 = B2 = 0 : One or more of the parameters is not equal to zero. Hai O Ho: B1 > B2 Ha: B1 s B2 О Но: В, + 0 and B, # 0
Ho: B1 > B2
Hạ: 1 s B2
Но: В, +0 and p, # 0
: One or more of the parameters is equal to zero.
Find the value of the test statistic. (Round your answer to two decimal places.)
Find the p-value. (Round your answer to three decimal places.)
p-value
%3D
State your conclusion.
Do not reject Ho. There is insufficient evidence to conclude that there is a significant relationship among the variables.
Reject Ho. There is insufficient evidence to conclude that there is a significant relationship among the variables.
Do not reject Ho: There is sufficient evidence to conclude that there is a significant relationship among the variables.
Reject Ho. There is sufficient evidence to conclude that there is a significant relationship among the variables.
(b) Is B, significant? Use a = 0.05.
State the null and alternative hypotheses.
O Ho: B1
Ha: B, + 0
1.
O Ho: B1 < 0
O Ho: B1 = 0
Ha: B, > 0
1
Ho: B1 > 0
O Ho: B1 + 0
Ha: B1
= 0
Find the value of the test statistic. (Round your answer to two decimal places.)
Find the p-value. (Round your answer to three decimal places.)
p-value
%D
Transcribed Image Text:Ho: B1 > B2 Hạ: 1 s B2 Но: В, +0 and p, # 0 : One or more of the parameters is equal to zero. Find the value of the test statistic. (Round your answer to two decimal places.) Find the p-value. (Round your answer to three decimal places.) p-value %3D State your conclusion. Do not reject Ho. There is insufficient evidence to conclude that there is a significant relationship among the variables. Reject Ho. There is insufficient evidence to conclude that there is a significant relationship among the variables. Do not reject Ho: There is sufficient evidence to conclude that there is a significant relationship among the variables. Reject Ho. There is sufficient evidence to conclude that there is a significant relationship among the variables. (b) Is B, significant? Use a = 0.05. State the null and alternative hypotheses. O Ho: B1 Ha: B, + 0 1. O Ho: B1 < 0 O Ho: B1 = 0 Ha: B, > 0 1 Ho: B1 > 0 O Ho: B1 + 0 Ha: B1 = 0 Find the value of the test statistic. (Round your answer to two decimal places.) Find the p-value. (Round your answer to three decimal places.) p-value %D
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