Automobiles Purchased An automobile owner found that  20 years ago, 73%  of Americans said that they would prefer to purchase an American automobile. He believes that the number is much less than 73%  today. He selected a random sample of  45 Americans and found that 30 said that they would prefer an American automobile. Can it be concluded that the percentage today is less than 73% ? At α=0.05, is he correct? Use the P -value method with tables  (a) State the hypotheses and identify the claim. :H0      ▼(Choose one) :H1      ▼(Choose one) This hypothesis test is a ▼(Choose one) test.         (b) Find the critical value(s). Round the answer to two decimal places. If there is more than one critical value, separate them with commas. Critical value(s):          (c) Compute the test value. Always round z  score values to at least two decimal places.  =z           (d) Make the decision. ▼(Choose one) the null hypothesis.       (e) Summarize the results. There is ▼(Choose one) that

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A:

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Q: z

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.