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WorksheetsAP Stats 7.1 Check In
Total questions: 15
Worksheet time: 26mins
At a particular college, 78% of all students are receiving some kind of financial aid. The school newspaper selects a random sample of 200 students and 72% of the respondents say they are receiving some sort of financial aid. Which of the following is true?
78% is a population and 72% is a sample.
72% is a population and 78% is a sample.
78% is a parameter and 72% is a statistic.
72% is a parameter and 78% is a statistic.
A statistic is an unbiased estimator of a parameter when
the statistic is calculated from a random sample.
in a single sample, the value of the statistic is equal to the value of the parameter.
in many samples, the values of the statistic are very close to the value of the parameter.
in many samples, the values of the statistic are centered at the value of the parameter.
in many samples, the distribution of the statistic has a shape that is approximately normal
In a residential neighborhood, the distribution of house values is unimodal and skewed to the right, with a median of $200,000 and an IQR of $100,000. For which of the following sample sizes is the sample median most likely to be above $250,000?
n = 10
n = 50
n = 100
n = 1000
Increasing the sample size of an opinion poll will reduce the
bias of the estimates made fro the data collected in the poll
variability of the estimates made from the data collected in the poll
effect of nonresponse of the poll
variability of opinions in the sample
variability of opinions in the population
The math department at a small school has 5 teachers. The ages of these teachers are 23, 34, 37, 42, and 58. Suppose you select a random sample of 4 teachers and calculate the sample minimum age.
Which of the following shows the sampling distribution of the sample minimum age?
Classify each of the specified numbers as a parameter or a statistic.
There have been 44 Presidents of the United States, and 36% of them were Democrats. The 36% here is a...
Statistic
Parameter
Sample
Population
Classify each of the specified numbers as a parameter or a statistic.
There have been 44 Presidents of the United States, and 36% of them were Democrats. The 44 is a...
Statistic
Parameter
Sample
Population
In a 2011 Gallup poll of 1008 adults living in the United States, 11% said they are satisfied with the condition of the national economy. The 11% here is a
Sample
Population
Statistic
Parameter
In a 2011 Gallup poll of 1008 adults living in the United States, 11% said they are satisfied with the condition of the national economy. The 1008 is a
Sample
Population
Statistic
Parameter
The data from all 36 students in Ms. Dunham's second grade class have a mean height of 64 inches with a standard deviation of 1.3 inches. The 1.3 inches is a
Sample
Population
Statistic
Parameter
1030
40
990
