The best predicted value of ŷ is. (Round to two decimal places as needed.)
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 1GP
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Transcribed Image Text:Suppose IQ scores were obtained for 20 randomly selected sets of twins. The 20 pairs of measurements yield
x= 104.22, y = 103.65, r=0.911, P-value = 0.000, and y=-7.62 +1.07x, where x represents the IQ score of the
twin born first. Find the best predicted value of y given that the twin born first has an IQ of 107? Use a significance level
of 0.05.
Click the icon to view the critical values of the Pearson correlation coefficient r.
The best predicted value of ŷ is.
(Round to two decimal places as needed.)
...
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Transcribed Image Text:Critical Values of the Pearson Correlation Coefficient r
n
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
25
30
35
40
男
α = 0.05
0.950
0.878
0.811
0.754
0.707
0.666
0.632
0.602
0.576
0.553
0.532
0.514
0.497
0.482
0.468
0.456
0.444
0.396
0.361
0.335
0312
α = 0.01
0.990
0.959
0.917
0.875
0.834
0.798
0.765
0.735
0.708
0.684
0.661
0.641
0.623
0.606
0.590
0.575
0.561
0.505
0.463
0.430
0402
NOTE: To test Ho: p=0
against H₁: p#0, reject Ho
if the absolute value of ris
greater than the critical
value in the table.
-
ureme
e IQ so
Use a
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