For the data set shown below, complete parts (a) through (d) below. x 3 4 5 7 8 y 5 7 6 13 14 (a) Find the estimates of beta 0 and beta 1. beta 0almost equalsb 0equals nothing (Round to three decimal places as needed.) beta 1almost equalsb 1equals nothing (Round to three decimal places as needed.) (b) Compute the standard error, the point estimate for sigma. s Subscript eequals nothing (Round to four decimal places as needed.) (c) Assuming the residuals are normally distributed, determine s Subscript b 1 Baseline . s Subscript b 1equals nothing (Round to three decimal places as needed.) (d) Assuming the residuals are normally distributed, test Upper H 0 : beta 1 equals 0 versus Upper H 1 : beta 1 not equals 0 at the alpha equals 0.05 level of significance. Use the P-value approach. The P-value for this test is nothing. (Round to three decimal places as needed.) Make a statement regarding the null hypothesis and draw a conclusion for this test. Choose the correct answer below. A. Reject Upper H 0. There is sufficient evidence at the alpha equals 0.05 level of significance to conclude that a linear relation exists between x and y. B. Reject Upper H 0. There is not sufficient evidence at the alpha equals 0.05 level of significance to conclude that a linear relation exists between x and y. C. Do not reject Upper H 0. There is not sufficient evidence at the alpha equals 0.05 level of significance to conclude that a linear relation exists between x and y. D. Do not reject Upper H 0. There is sufficient evidence at the alpha equals 0.05 level of significance to conclude that a linear relation exists between x and y.
a)
beta 0 =-1.3605
beta1 =1.9186
b)
SSE =Syy-(Sxy)2/Sxx= | 6.686 |
s2 =SSE/(n-2)= | 2.2287 | |
std error σ = | =se =√s2= | 1.4929 |
c)
estimated std error of slope =se(β1) =s/√Sxx= | 0.3600 |
d)
test stat t = | β1/se(β1)= | = | 5.330 |
p value: | = | 0.013 |
reject Ho There is sufficient evidence at the alpha equals 0.05 level of significance to conclude that a linear relation exists between x and y.
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