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 17:00, liddopiink1
Find the area of a parallelogram with the given vertices. p(-2, -5), q(9, -5), r(1, 5), s(12, 5)
Answers: 1
Mathematics, 22.06.2019 01:30, KillerSteamcar
Jacob is graphing the line represented by the equation −6x−5y=12.−6x−5y=12. he first plots the x-x- and y-interceptsy-intercepts as follows. which statement is correct regarding the intercepts on the graph?
Answers: 1
Suppose that, in 2010, 13.4% of all cars purchased nationwide were gray. The owner of several local...
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