1.Determine which of the following statements is descriptive in nature and which

Question

1.Determine which of the following statements is descriptive in nature and which is inferential.

(a) Of the sampled spas in 2004, 72% were categorized as day spas.

descriptivenot

enough information    

inferential

(b) Based on data collected from a random sample of spas, it was estimated that 23% of all spa visits were visits by men.

descriptive

notenough information   

inferential

2. Of the adult U.S. population, 35% has an allergy. A sample of 1200 randomly selected adults resulted in 31.1% reporting an allergy.

(a) Describe the population.

all U.S. adults

1200 randomly selected adults    

(b) What is the sample?

all U.S. adults

1200 randomly selected adults    

(c) Describe the variable.

allergy status

percentage of adults with allergies    

how many adults have allergy symptoms

(d) Identify the statistic and give its value.

percent of all U.S. adults who have an allergy, 35%

percent of all U.S. adults who have an allergy, 31.1%    

percent of sampled adults who have an allergy, 31.1%

percent of sampled adults who have an allergy, 35%

(e) Identify the parameter and give its value.

percent of all U.S. adults who have an allergy, 31.1%

percent of sampled adults who have an allergy, 31.1%    

percent of sampled adults who have an allergy, 35%

percent of all U.S. adults who have an allergy, 35%

Explanation / Answer

1.)

a.) Descriptive

B.) Inferential

2.)

a.) All U.S. adults

b.) 1200 randomly selected adults

c.) Allergy status

d.) Percent of sampled adults who have an allergy , 31.1%

e.) Percent of all adults who have an allergy, 35%

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