Answered: A researcher would like to know if IQ… | bartleby

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

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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Related questions

Question

Calculate the following questions and use the table for reference.Show the complete solution.

A researcher would like to know if IQ scores are related to age. Using 35
freshmen students, he found out that the computed r = 0.58. At 0.10 level
of significance, can he conclude that the relationship exists in the
population?
ANSWER
Но:
На:
Computed Value:
Tabular value:
Decision:
Summary:

CRITICAL VALUES of Z (tabulated values)
Level of
One-tailed Test
Two-tailed Test
Significance a
0.10
±1.28
±1.645
+1.96
0.05
+1.645
0.01
+2.33
+2.58
STUDENT'S T-DISTRIBUTION TABLE (tabulated values)
Level of significance for one-tailed test
df
0.10
0.05
0.025
0.01
0.005
.0005
Level of significance for two-tailed test
df
0.20
0.10
0.05
0.02
0.01
0.001
1
3.0780
6.3140
12.7060
31.8210
63.6570
636.6190
2
1.8860
2.9200
1.3030
6.9650
9.9250
31.5980
3
1.6380
2.3530
3.1820
4.5410
5.8410
12.9410
4
1.5330
2.1320
2.7760
3.7470
4.6040
8.6100
1.4760
2.0150
2.5710
3.3650
4.0320
6.8590
6
1.4400
1.9430
2.4470
3.1430
3.7070
5.9590
7
1.4150
1.8950
2.3650
2.9980
3.4990
5.4050
8
1.3970
1.8600
2.3060
2.8960
3.3550
5.0410
9
1.3830
1.8330
2.2620
2.8210
3.2500
4.7810
10
1.3720
1.8120
2.2280
2.7640
3.1690
4.5870
11
1.3630
1.7960
2.2010
2.7180
3.1060
4.4370
12
1.3560
1.7820
2.1790
2.6810
3.0550
4.3180
13
1.3500
1.7710
2.1600
2.6500
3.0120
4.2210
14
1.3450
1.7610
2.1450
2.6240
2.9770
4.1400
15
1.3410
1.7530
2.1310
2.6020
2.9470
4.0730
16
1.3370
1.7460
2.1200
2.5830
2.9210
4.0150
17
1.3330
1.7400
2.1100
2.5670
2.8980
3.9650
18
1.3300
1.7340
2.1010
2.5520
2.8780
3.9220
19
1.3260
1.7290
2.0930
2.5390
2.8610
3.8830
20
1.3250
1.7250
2.0860
2.5280
2.8450
3.8500
21
1.3230
1.7210
2.0800
2.5180
2.8310
3.6190
22
1.3210
1.7170
2.0740
2.5080
2.8190
3.7920
23
1.3190
1.7140
2.0690
2.5000
2.8070
3.7670
24
1.3180
1.7110
2.0640
2.4920
2.7970
3.7450
25
1.3160
1.7080
2.0600
2.4850
2.7870
3.7250
26
1.3150
1.7060
2.0560
2.4790
2.7790
3.7070
27
1.3140
1.7030
2.0520
2.4730
2.7710
3.6900
28
1.3130
1.7010
2.0480
2.4670
2.7630
3.6740
29
1.3110
1.6990
2.0450
2.4620
2.7560
3.6590
30
1.3100
1.6970
2.0420
2.4570
2.7500
3.6460
40
1.3030
1.6840
2.0210
2.4240
2.7040
3.5510
60
1.2960
1.6710
2.0000
2.3900
2.6600
3.4600
120
1.2890
1.6580
1.9800
2.3580
2.6170
3.3730
1.2820
1.6450
1.9600
2.3260
2.5760
3.2910

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