Question

Three students took a statistics test before and after coaching, but coaching did not effect the scores of students i.e mean change in scores is zero. Their scores are as follows:

Students |
A |
B |
C |

Before |
71 |
88 |
63 |

After |
70 |
89 |
60 |

The value of t-test statistic for matched pairs is

**chooes**

8.66 |
||

0.866 |
||

-0.866 |
||

-8.66 |

Answer #1

Three students took a statistics test before and after coaching,
but coaching did not effect the scores of students i.e mean change
in scores is zero. Their scores are as follows: Students A B C
Before 70 88 62 After 71 89 56
Find the value of test statistic-t for matched pairs.(Round off
up to 3 decimal places)

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table. Treat this as though it were a random sample of female
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after being frightened. The frightening event was having the
teacher scream and run from one side of the room to the other. The
pulse rates (beats per minute) of the students before and after the
scream were obtained separately and are shown in the table. Treat
this as though it were a random sample of community college
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Ten randomly selected people took an IQ test A, and next day
they took a very similar IQ test B. Their scores are shown in the
table below.
Person
A
B
C
D
E
F
G
H
I
J
Test A
104
87
88
110
97
128
116
94
71
101
Test B
110
88
89
108
96
129
119
97
73
106
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a=0.10
H0, H1, CV, Test Statistic
no mozart
80 63 74...

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