11.1 Pop./Sample/Statistics/Parameter

These symbols represent the mean and standard deviation for which of the following distributions?

• The population

• The Sample

• The Sampling Distribution

At a particular college, 78% of all students are receiving some kind of financial aid. The school newspaper selects a random sample of 100 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 sample of data is used to calculate the parameter for a probability model. The calculated value is...

• an estimate of the value of the parameter

• the same for every sample

• the true value of the parameter

A statistic is a number which describes a sample.

• True

• False

Is the following a parameter or a statistic?

The average annual salary for 35 of a company's 1200 accountants is $68,000.

• Parameter

• Statistic

. 

Is the following a parameter or a statistic?

In a survey of a sample of high school students, 43% said that their mother has taught them the most about managing money.

• Parameter

• Statistic

Is the following a parameter or a statistic?

Sixty-two of the 97 passengers aboard the Hindenburg airship survived its explosion.

• Parameter

• Statistic

A restaurant chain wanted to find out how the customer experience was in a particular store.

Which choice best represents a statistic they may obtain?

• The percentage of all customers that reported a positive experience.

• The percentage of customers surveyed that reported a positive experience.

• All customers.

• A random selection of customers that were surveyed.

A beverage company wanted to see if people in the United States liked their new logo. Which choice best represents a population?

• A selection of logo artists

• Every person in the United States.

• A selection of shoppers from different shoppers from different states.

• 3,800 children age 5-15

A musician wanted to see what people who bought his last album thought about the songs. Which choice best represents a sample?

• Every person who bought the album.

• A selection of people who didn't want to buy the album.

• 250 girls who bought the album.

• A selection of 3,294 people who bought the album.