An American Demographics study in 1980 found that 55% of new car buyers were women. One...
An American Demographics study in 1980 found that 55% of new car buyers were women. One of the top three car makers want to know if this percentage has changed since 1980. They took a random sample of 150 new car buyers and found that 78 were women.
A: Is there sufficient evidence from the sample to conclude the percentage of women who buy new cars has changed since 1980? Test the hypothesis at the 1% level of significance. Make sure to state the null and alternative hypotheses and to report your conclusion?
B: Calculate the p-value.
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An American Demographics study in 1980 found that 55% of new car
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a) Express the null and alternative hypotheses in symbolic form for
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Ho: p=
Ha:
Use the following codes to enter the following symbols:
≥≥ enter >=
≤≤ enter <=
≠≠ enter !=
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a) Express the null and alternative hypotheses in symbolic form for
this claim.
Ho: p=
Ha:
Use the following codes to enter the following symbols:
≥≥ enter >=
≤≤ enter <=
≠≠ enter !=
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statistic. Round to two decimal places....
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