우리나라 유권자 중에서 임의로 1,000명을 추출하여 여론조사를 실시해서 복지정책의 지지율을 측정하였다. 조사결과 1,000명 중 600명이 현행 정책을 지지했다. 다음 중 틀린 설명은? 单项选择题
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Question at position 19 The CEO of a company wants to estimate the percent of employees that use company computers to go on Facebook during work hours. The CEO selects a random sample of 150 of the employees and finds that 53 of them logged onto Facebook that day. What is the point estimate of the proportion of the population that logged onto Facebook that day? NOTE: Please provide your calculation and final answer in separate blank spaces. Calculation is : Question Blank 1 of 2[input], Final answer is: Question Blank 2 of 2[input].
位置13的问题 Four hundred registered voters were randomly selected and asked whether gun laws should be changed. Three hundred said "yes," and 100 said "no." The point estimate of the proportion in the population who will respond "yes" is 题库 1/1[input]. (Note: your answer should retain TWO decimal places.)
The number of defectives in 10 different groups of 50 observations each is the following: 5, 1, 1, 2, 3, 3, 1, 4, 2, 3. A larger sample of 500 observations is obtained by combining the 10 groups. Based on this combined sample, what is the sample proportion of defective items?
From a sample of 300 items, 15 are defective. The point estimate of the population proportion defective will be:
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