Suppose IQ scores were obtained for 20 randomly selected sets of twins. The 20 pairs of measurements yield x = 95.9, y = 94, r= 0.866, P-value = 0.000, and y = 15.74 + 0.82x, where x represents the IQ score of the twin born second. Find the best predicted value of y given that the twin born second has an IQ of 110? Use a significance level of 0.05. E Click the icon to view the critical values of the Pearson correlation coefficient r. The best predicted value of y is (Round to two decimal places as needed.)
Suppose IQ scores were obtained for 20 randomly selected sets of twins. The 20 pairs of measurements yield x = 95.9, y = 94, r= 0.866, P-value = 0.000, and y = 15.74 + 0.82x, where x represents the IQ score of the twin born second. Find the best predicted value of y given that the twin born second has an IQ of 110? Use a significance level of 0.05. E Click the icon to view the critical values of the Pearson correlation coefficient r. The best predicted value of y 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 = 95.9, y = 94, r= 0.866,
P-value = 0.000, and y = 15.74 + 0.82x, where x represents the IQ score of the twin born second. Find the best predicted value of y given that the
twin born second has an IQ of 110? Use a significance level of 0.05.
%3D
Click the icon to view the critical values of the Pearson correlation coefficient r.
The best predicted value of y is
(Round to two decimal places as needed.)
Transcribed Image Text:Critical Values of the Pearson Correlation Coefficient r
Critical Values of the Pearson Correlation Coefficientr
a = 0.05
x = 0.01
|NOTE: To test Ho: p= 0
against H,: p#0, reject Ho
if the absolute value of r is
greater than the critical
value in the table.
4
0.950
0.990
0.878
0.959
6.
0.811
0.917
7
0.754
0.875
8
0.707
0.834
9.
0.666
0.798
10
0.632
0.765
11
0.602
0.735
12
0.576
0.708
13
0.553
0.684
14
0.532
0.661
15
0.514
0.641
16
0.497
0.623
17
0.482
0.606
18
0.468
0.590
19
0.456
0.575
20
0.444
0.561
25
0.396
0.505
30
0.361
0.463
35
0.335
0.430
40
0.312
0.402
45
0.294
0.378
50
0.279
0.361
60
0.254
0.330
70
0.236
0.305
80
0.220
0.286
90
0.207
0.269
100
0.196
0.256
a = 0.05
a = 0.01
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