Use the following information to answer the first 5questions:
Suppose we wanted to estimate the average age of a certain groupof divorced men during 1988 and took a random sample of (n = ) 100giving us x =35.2 years old.
- this is the symbol that represents the average age of thepopulation
- this is the amount of people in the sample
- this is the average age found from our sample
- this is the symbol we use to represent the average age of thesample
- this is the population
Answer choices
(a) 35.2 (b) 100
(c) m (d) x
(e) the average age of a certain group of divorced men during1988
Suppose we wanted to estimate the average age of a certain groupof divorced men during 1988 and took a random sample of n = 7 andreceived the following ages: 37, 22, 31, 43, 39, 61, and 26.
6) Calculate . You can use a Google Spreadsheet if you’d likesince you should know by now how to calculate averages this way. Wewill learn another way soon (which most of you know at this timefrom previous courses).
x = 37 years old Answer choices: (a) True (b) False
Use the following information to answer the next three questionsand choose the best answer::
To determine the average height of Cornell University males, twoSociology students sampled 50 males, yielding an average height of5’10”.
7) What is the population parameter of interest?
(a) two Sociology students
(b) 50 males
(c) the average height of Cornell University males
8) What is the sample?
(a) two Sociology students
(b) 50 males
(c) the average height of Cornell University males
9) What symbol would we use to represent the average height of5’10” ?
(a) n
(b) x
(c) m
Decide if the following statements are descriptive orinferential.
10) About 85% of women in the US have a job.
11) The mean grade on the MA 161 final given last semester wasan 83.
12) Drinking bubble tea can raise cholesterol levels by10%.
Answer choices: (a) Descriptive (b) Inferential
Decide if the following statements are quantitative orcategorical (if categorical whether they are binary)
13) The age of a groom on his wedding day.
14) Whether a spun penny lands on heads or tails.
Answer choices:
(a) Quantitative
(b) Categorical - not binary
(c) Categorical - binary
15) Any x found is a parameter Answer choices: (a) True (b)False
