#### Ktina

##### New Member
A local United Way and a group of community agencies in a large urban area have decided that making sure young children are ready to enter the school system is a high priority for the community. They hire a group of researchers to assess the school readiness of individual children entering the 100 kindergarten classrooms in the area.

(a) (1 pt.) What is the population of interest?

(b) (1 pt.) Why would the researchers choose to assess a sample rather than the entire population?

2. Indicate whether each of the following statements refers to personal probably or to expected relative frequency probably. Explain your answers.

a) (1 pt.) The chance of a die showing an even number is 50%

b) (1 pt.) There is a1 in 4 chance that I’ll be late for class tomorrow.

c) (1 pt.) The likelihood that Ill break down and eat ice cream while studying is 80%

d) (1 pt.) Plaincrashinfo.com reported that he odds of begin killed on a single flight on 1 of the top 25 safest airlines is 1 in 9.2 million.

#### psychcy

##### New Member
(a) (1 pt.) What is the population of interest?

School-entering children.

(b) (1 pt.) Why would the researchers choose to assess a sample rather than the entire population?

It is too expensive/impossible, plus a representative sample that approximates the distribution of the population can be obtained less expensively.

2. Indicate whether each of the following statements refers to personal probably or to expected relative frequency probably. Explain your answers.

a) (1 pt.) The chance of a die showing an even number is 50%

Relative frequency. Refers to phenomenon in the world that are independent of your actions.

b) (1 pt.) There is a1 in 4 chance that I’ll be late for class tomorrow.

c) (1 pt.) The likelihood that Ill break down and eat ice cream while studying is 80%