Reep P.

asked • 05/16/18

hypothesis testing question?

"The U.S. Postal Service advertises that at least 63.4% of all third class mail is read by the recipients. An environmental group, concerned about waste production wants to test this assertion. They take a sample of 220 households and find that only 58.7% read their third class mail."

I thought the answer would be, H0 : P ≥ 0.634 and H1 : P < 0.634 as it says "at least 63.4%" in the question
but the answer is "H0 : P = 0.634 and H1 : P < 0.634" and I don't understand why

1 Expert Answer


Andy C. answered • 06/24/18

4.9 (27)

Math/Physics Tutor

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.


Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.