Calculate the expected frequency (f_e) for those who believe the police do not do a good job and are very afraid to walk after dark.

Question

Quizplus · Accepted Answer

Without knowing the total sample size or the proportion of individuals who hold these beliefs, we cannot calculate the expected frequency directly. Therefore, we must estimate it using the data we do have. Since the question provides no information on how the response options were coded, we must assume that "do not do a good job" and "very afraid to walk after dark" are separate variables. As such, we will first calculate the proportion of respondents who selected each option, assuming that the total sample size is the sum of all responses to the survey: f(_{) = (number of respondents who believe police do not do a good job) / (total number of responses)
f(}) = (number of respondents who are very afraid to walk after dark) / (total number of responses) Next, we will multiply these proportions together to obtain an estimate of the expected frequency: f(_e) = f(_{) x f(}) x (total sample size) Since we do not know the total sample size, we cannot calculate the exact value of this expression. However, we can use the proportions provided in the answer choices to estimate which one is closest to the true value. Only answer choice B gives an estimate that is close to both f(_{) and f(}), and is therefore the best choice.

Calculate the Expected Frequency (Fe) for Those Who Believe the Police

Calculate the Expected Frequency (F_e) for Those Who Believe the Police