n 36 246 S 12 H0 20 Ha 20 The test statistic is 23 038 2
n = 36
= 24.6
S = 12
H0: 20
Ha: > 20
 The test statistic is
2.3
0.38
-2.3
-0.38
| n = 36 | = 24.6 | S = 12 | H0: 20 | 
| Ha: > 20 | 
Solution
Set Up Hypothesis
 Null, H0: U=20
 Alternate, H1: U>20
 Test Statistic
 Population Mean(U)=20
 Sample X(Mean)=24.6
 Standard Deviation(S.D)=12
 Number (n)=36
 we use Test Statistic (t) = x-U/(s.d/Sqrt(n))
 to =24.6-20/(12/Sqrt(35))
 to =2.3

