1.Determine whether the source given below has the potential to create a bias in a statistical study.

Washington University obtained word counts from the most popular novels of the past five years.

Choose the correct answer below.

A.

There does not appear to be a potential to create a bias. The organization would not gain from putting a spin on the results.

B.

There does not appear to be a potential to create a bias. The organization is reputable and has many professional and credible members.

C.

There does appear to be a potential to create a bias. There is an incentive to produce results that are in line with theorganization's creed and that of its funders.

D.

There does appear to be a potential to create a bias. There is an incentive to make the results statistically insignificant.

3. In the data table below, the x-values are the weights (in pounds) of cars and the y-values are the corresponding highway fuel consumption amounts (in mi/gal).

Weight (lb)	40174017	33793379	41224122	36673667	35333533
Highway Fuel Consumption (mi/gal)	2525	3232	2929	2828	3030

Given the context of the car measurement data, what issue can be addressed by conducting a statistical analysis of thevalues?

Choose the correct answer below.

A.

Does the weight of a car cause the highway fuel consumption of the car to increase or decrease?

B.

Does the highway fuel consumption of a car cause the weight of the car to increase or decrease?

C.

Is there a relationship between the mean weight of a car and the mean fuel consumption of cars?

4. Which of the following is typically the least important factor to consider when conducting a statistical analysis ofdata?

Choose the correct answer below.

1. Sampling method

2. Context of the data

3. Formula calculation

4. Source of the data

5. Determine whether the given value is a statistic or a parameter.

Upper A study was conducted of all 882 workers in a certain state.A study was conducted of all 882 workers in a certain state.

Choose the correct answer below.

A.

The value is a

statisticstatistic

because it is a numerical measurement describing some characteristic of a population.population.

B.

The value is a

parameterparameter

because it is a numerical measurement describing some characteristic of a population.population.

C.

The value is a

parameterparameter

because it is a numerical measurement describing some characteristic of a sample.sample.

D.

The value is a

statisticstatistic

because it is a numerical measurement describing some characteristic of a sample.sample.

6. Determine whether the given value is a statistic or a parameter.

In a study of all 4485 seniors at a college comma it is found that 35 % own a vehicle.In a study of all 4485 seniors at a college, it is found that 35% own a vehicle.

Choose the correct statement below.

1. ParameterParameter

because the value is a numerical measurement describing a characteristic of a

samplesample.

2. StatisticStatistic

because the value is a numerical measurement describing a characteristic of a

samplesample.

3. StatisticStatistic

because the value is a numerical measurement describing a characteristic of a

populationpopulation.

4. ParameterParameter

because the value is a numerical measurement describing a characteristic of a

populationpopulation.

7. Determine whether the given value is a statistic or a parameter.

A homeowner measured the voltage supplied to his home

on 38 different dayson 38 different days,

and the average (mean) value is

124.6124.6

volts.

Choose the correct answer below.

A.

The given value is a

parameterparameter

for the

yearyear

because the data collected represent a

populationpopulation.

B.

The given value is a

parameterparameter

for the

yearyear

because the data collected represent a

samplesample.

C.

The given value is a

statisticstatistic

for the

yearyear

because the data collected represent a

samplesample.

D.

The given value is a

statisticstatistic

for the

year

because the data collected represent a

populationpopulation.