Sixty percent of the respondents in a random sample drawn from a neighborhood are Democrats.The community as a whole is 75% Democrat.The difference between sample and population has been tested and the null hypothesis has been rejected.What may we conclude?
A)a Type I error has been committed
B)a one-tailed test has been used
C)the neighborhood is significantly less likely to be Democrat
D)the difference is not significant

Question

Quizplus · Accepted Answer

The null hypothesis is that the sample proportion of Democrats is equal to the population proportion of Democrats. The alternative hypothesis is that the sample proportion of Democrats is not equal to the population proportion of Democrats. The null hypothesis has been rejected, which means that there is evidence to suggest that the sample proportion of Democrats is not equal to the population proportion of Democrats. This means that the neighborhood is significantly less likely to be Democrat.

Sixty Percent of the Respondents in a Random Sample Drawn