SOLUTION: The average length of the time for people to vote using the old procedure during
the presidential election period in election precinct A is 30 minutes. Using
computerization as a
Algebra ->
Probability-and-statistics
-> SOLUTION: The average length of the time for people to vote using the old procedure during
the presidential election period in election precinct A is 30 minutes. Using
computerization as a
Log On
Question 1180231: The average length of the time for people to vote using the old procedure during
the presidential election period in election precinct A is 30 minutes. Using
computerization as a new election method, a random sample of 25 registrants was used
and found to have a mean length of voting time to 24 minutes with a sample standard
deviation of 2.9 minutes. Test the hypothesis in which the population mean is less than
the sample mean.
Solution:
1. H0:
H1:
2. Level of Significance:
3. Test:
4. Critical Region:
5. Solutions: Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! Ho: mean 1 < mean 2
Ha: mean 1 >= mean2
test is a t df=24
t=(xbar-mean)/s/sqrt(n)
critical value is t < -1.711
calculation is t=(24-30)/2.9/sqrt(25)=-30/2.9
the t-value is -10.34
highly significant that there is a difference
p-value <<0.0001
