You may need to use the appropriate appendix table or technology to answer this question. Given are five observations for two variables, x and y. (Round your answers to two decimal places.) xi 1 2 3 4 5 yi 4 6 6 11 14 (a) Use  sŷ* = s   1 n +  (x* − x)2 Σ(xi − x)2

A First Course in Probability (10th Edition)
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You may need to use the appropriate appendix table or technology to answer this question.
Given are five observations for two variables, x and y. (Round your answers to two decimal places.)
xi
1 2 3 4 5
yi
4 6 6 11 14
(a)
Use 
sŷ* = s
 
1
n
 + 
(x* − x)2
Σ(xi − x)2
 to estimate the standard deviation of 
ŷ*
 when 
x = 4.
 
(b)
Use 
ŷ* ± tα/2sŷ*
 to develop a 95% confidence interval for the expected value of y when 
x = 4.
 to 
(c)
Use 
spred = s
  1 + 
1
n
 + 
(x* − x)2
Σ(xi − x)2
 to estimate the standard deviation of an individual value of y when 
x = 4.
 
(d)
Use 
ŷ* ± tα/2spred
 to develop a 95% prediction interval for y when 
x = 4.
 to 
You may need to use the appropriate appendix table or technology to answer this question.
Given are five observations for two variables, x and y. (Round your answers to two decimal places.)
x; 1
3
4
Y;
4
6
11
14
(x* - x)2
E(x, - x)2
(a) Use S = sV
1
+
to estimate the standard deviation of ý* when x = 4.
(b) Use ý* + t,ias to develop a 95% confidence interval for the expected value of y when x = 4.
to
(x* - x)2
E(x, - x)2
1
(c) Use spred = sV 1 +- +
to estimate the standard deviation of an individual value of y when x = 4.
n
(d) Use ý" ± t/25 pred to develop a 95% prediction interval for y when x = 4.
to
Transcribed Image Text:You may need to use the appropriate appendix table or technology to answer this question. Given are five observations for two variables, x and y. (Round your answers to two decimal places.) x; 1 3 4 Y; 4 6 11 14 (x* - x)2 E(x, - x)2 (a) Use S = sV 1 + to estimate the standard deviation of ý* when x = 4. (b) Use ý* + t,ias to develop a 95% confidence interval for the expected value of y when x = 4. to (x* - x)2 E(x, - x)2 1 (c) Use spred = sV 1 +- + to estimate the standard deviation of an individual value of y when x = 4. n (d) Use ý" ± t/25 pred to develop a 95% prediction interval for y when x = 4. to
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