单项选择题

A politician who is running for the office of premier i……

A politician who is running for the office of premier in a state with 3 million registered voters commissions a survey. In the survey, 53.6% of the 5000 registered voters interviewed say they plan to vote for him. The population of interest is the（）

A.3 million registered voters in the state.
B.5000 registered voters interviewed.
C.53.6%of，or 2680，voters interviewed who plan to vote for him
D.46.4%of，or 2320，voters interviewed who plan not to vote for him

<上一题目录下一题>

热门试题

单项选择题Claudia Taylor, Director of Global Industrial Sales in Melbourne, is concerned by a deteriorating sales trend. Specifically, the number of customers is stable at 1500 but they are purchasing less each year. She orders her staff to search for causes of the downward trend by selecting a focus group of 40 industrial customers. For this study, the set of 40 industrial customers is a （）.

A.statistic
B.sample
C.population
D.parameter

单项选择题Michael Bayley, Marketing Director of UniPower’s Electrical Division, is leading a study to identify and assess the relative importance of product features. Michael directs his staff to design a survey questionnaire for distribution to all of UniPower’s 954 customers. For this study, the set of 954 customers is a （）.

A.statistic
B.population
C.parameter
D.sample

单项选择题Penny Bauer, Chief Financial Officer of Harrison Haulage, suspects irregularities in the payroll system, and orders an inspection of ‘each and every payroll voucher issued since 1 January 2005’. Five per cent of the payroll vouchers contained material errors. This is an example of （）.

A.nonparametric statistics
B.nominal data
C.descriptive statistics
D.inferential statistics

判断题Statistical independence means the outcome of one event is independent of the outcome of a second event.

判断题If the population distribution is unknown, in most cases the sampling distribution of the mean can be approximated by the normal distribution if the sample size is at least 15 observations.