An automobile manufacturer stated that it will be willing to mass produce electric-powered cars
1. In the last presidential election, a national survey company claimed that no more than 50% (i.e., < 50%) of all registered voters voted for the Republican candidate. In a random sample of 400 registered voters, 208 voted for the Republican candidate.
a. State the null and the alternative hypotheses.
b. Compute the test statistic.
c. At 95% confidence, compute the p-value and test the hypotheses.
2. An automobile manufacturer stated that it will be willing to mass produce electric-powered cars if more than 30% of potential buyers indicate they will purchase the newly designed electric cars. In a sample of 500 potential buyers, 160 indicated that they would buy such a product.
a. State the hypotheses for this problem
b. Compute the standard error of .
c. Compute the test statistic.
d. At 95% confidence, what is your conclusion? Should the manufacturer produce the new electric powered car?
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20 Apr 2016
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An automobile manufacturer stated that it will be willing to mass produce electric-powered cars
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