Discussion:
Q: A company is researching the effectiveness of a new website design to decrease the time to access a website. Five website users were randomly selected and their times (in seconds) to access the website with the old and new designs were recorded. The results follow:
User Old Website Design New Website Design
A 30 15
B 45 20
C 25 10
D 32 25
E 28 20
Let α = 0.10. Is the mean time to access the new website design shorter, or is (time for the old design - time for the new design) greater than zero?
a) What is the null hypothesis?
b) What is the alternate hypothesis
c) What is the dregree of freedom 8
d) What is the critical t value at 1% significance level: .10
e) Assume calculated t to be 2.70, at the .01 significance, what would be your decision