(Solved) : Part E Using R Software E Company Said Compliance 8 Invoices Contain Errors Said Seriously Q28206841 . . . .

ONLY PART E) USING R SOFTWARE FOR e)

A company is said to be out of compliance if more than 8% of allinvoices contain errors, and it is said to be seriously out ofcompliance if more than 12% of all invoices contain errors. Supposean auditor randomly selects a sample of 800 invoices and finds that104 contained errors.

a) Construct a 90% confidence interval for this company’s errorrate.

b) How should the company be rated if statements about being outof compliance or seriously out of compliance require 5% level ofsignificance?

c) What is the probability a company would be rated as seriouslyout of compliance by