- A Telephone Company Claims That More Than 18 Of Its Customers Have A Home Telephone Line The Company Selects A Random 1 (41.54 KiB) Viewed 15 times
A telephone company claims that more than 18% of its customers have a home telephone line. The company selects a random sample of 400 customers and finds that 87 have home telephone lines. If a = 0.07, test the company's claim using critical values and rejection regions. (Round to four decimals) H: H: a= Which hypothesis represents the claim? Circle: Null Hypothesis or Alternative Hypothesis Find the critical values of the rejection region. (Show calculator function used, values plugged into calculator function and final answer rounded to 4 decimals. Sketch the rejection region on the normal curve) Test the hypothesis. (Show original formula, values then plugged into formula, and final answer rounded to 4 decimals) Decision (Reject or Fail to Reject): Write a conclusion in context of this problem. At % level of significance, there enough evidence to the claim that