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
buyers were women. One...
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