A manager at Amazon's warehouse believes that complaints have increased since the implementation of a new App to manage orders. Weekly customer complaints before the App averaged 1,000 or less. The mean number of complaints per week for the last 12 weeks since the implementation of the App is 1,030. The known standard deviation is 100 complaints.
a) Develop the null and alternative hypothesis.
b) What conclusion is appropriate when Ho cannot be rejected?
c) What conclusion is appropriate when Ho can be rejected?
d) What is the Type 1 error in this situation? What are the consequences of making this error?
e) What is the Type 2 error in this situation? What are the consequences of making this error?
f) What is the p-value?
g) At a = 0.05 what is your conclusion?