1631 1452 1728 1312 a 1631 b 1452 c 1728 d 1312 SolutionTest
1.631
1.452
1.728
1.312
| a) | 1.631 | |
| b) | 1.452 | |
| c) | 1.728 | |
| d) | 1.312 | 
Solution
Test Statistic
 Population Mean(U)=6.9
 Sample X(Mean)=7.2
 Standard Deviation(S.D)=0.8
 Number (n)=15
 we use Test Statistic (t) = x-U/(s.d/Sqrt(n))
 to =7.2-6.9/(0.8/Sqrt(14))
 to =1.452

