Mathematics, 28.07.2020 19:01 mountainwilson
Suppose that, in 2010, 13.4% of all cars purchased nationwide were gray. The owner of several local car dealerships wants to compare this proportion to the current proportion of customers who purchase gray cars. To test this, she selects a random sample of 220 recent purchases and finds that 31 people, or 14.1%, purchased gray cars. She plans to use this information in a one-sample z ‑test for a proportion to determine whether the proportion of customers who purchase gray cars has changed since 2010. Choose the appropriate null (H0) and alternative (H1) hypotheses for such a test.
Answers: 3
Mathematics, 21.06.2019 15:10
5x + 2 = 12 solve the following equation. then place the correct number in the box provided.
Answers: 2
Mathematics, 21.06.2019 21:30
Mario is constructing a frame for 10 in. by 8 in. photo. he wants the frame to be the same with all the way around in the same area of the frame and photo to be 120 square inches what is the dimension of the frame?
Answers: 1
Suppose that, in 2010, 13.4% of all cars purchased nationwide were gray. The owner of several local...
Mathematics, 30.10.2019 01:31
Mathematics, 30.10.2019 01:31
Mathematics, 30.10.2019 01:31
Mathematics, 30.10.2019 01:31