Math

StatisticsQ&A LibraryReported Versus Measured In a survey of 1046 adults conducted by Bradley Corporation, subjects were asked how often they wash their hands when using a public restroom, and 70% of the respondents said “always.”a. Identify the sample and the population.b. Why would better results be obtained by observing the hand washing instead of asking about it?Question

Asked Jan 18, 2020

11 views

Reported Versus Measured In a survey of 1046 adults conducted by Bradley Corporation, subjects were asked how often they wash their hands when using a public restroom, and 70% of the respondents said “always.”

a. Identify the sample and the population.

b. Why would better results be obtained by observing the hand washing instead of asking about it?

Step 1

(a)

**Sample:**

Sample is the subset of the subjects chosen from the whole population.

The given survey is based on the 1,046 adults, which is the subset from the population of adults. Hence, the sample is **1,046 adults**.

**Population:**

Population consists of the complete subjects that are included in the study for making inferences.

The given survey is based all the adults who are included in the study and this is represent the population.

Hence, the population is **all the adults in the study**.

Tagged in

Find answers to questions asked by student like you

Show more Q&A

Q: Radiation in Baby Teeth Listed below are amounts of strontium-90 (in millibecquerels, or mBq, per gr...

A: The claim that the median amount of strontium-90 from Pennsylvania residents is the same as the medi...

Q: Level of Measurement Which of the levels of measurement (nominal, ordinal, interval, ratio) describe...

A: Four types of measurement levels:Nominal level: It consists of only categories in which the data can...

Q: IQ Scores. In Exercises,find the area of the shaded region. The graphs depict IQ scores of adults, a...

A: Define the random variable x as IQ score of adults. From the given figure, the IQ scores x are 79 an...

Q: Cell Phones and Driving In the author’s home town of Madison, CT, there were 2733 police traffic sto...

A: Hypothesis Testing:

Q: In a survey of 2104 adults in a recent year, 1307 say they have made a New Year's resolution. Constr...

A: According to the provided data, 2104 (n) adults surveyed out of which 1307 (x) made a New Year’s res...

Q: Finding Critical Values. In Exercises 5–8, find the critical value zα/2 that corresponds to the give...

A: For 98% confidence level,

Q: Regression If the methods of this section are used with paired sample data, and the conclusion is th...

A: The methods used in the section 10-3 are using technology to find the regression equation and using ...

Q: Interpret each of the following probability statements, using the frequentist interpretation of prob...

A: Click to see the answer

Q: Gasoline Mileage. An engineer wants to determine factors that affect the EPA miles per gallon rating...

A: a)Predictor variable:Predictor variable in a regression is the independent variable, which explains ...