The registrar at a university with 18,000 students wants to determine the propor
ID: 3069406 • Letter: T
Question
The registrar at a university with 18,000 students wants to determine the proportion of st favor a change in the grading system to allow for plus and minus grades (ie, B, B, and B+ instead of just B). A survey is distributed to 350 students to determine their attitudes toward this proposed change What is the population of interest? What group of students constitutes the sample? Suppose that 84% of the surveyed students support this change. Is this percentage a population parameter or a sample 1. udents who statistic? 2. Identify the following variables as categorical (nominal), ordinal, continuous numeric, or discrete numeriC a) Time it takes to run a marathon b) County of residence c) Number of cigarettes smoked per day d) Price of a gallon of gasoline e) Number of unpopped kernels in a bag of microwave popcorn Time spent studying for an exam g) Zip code h) Health status (poor, fair, good, very good, etc.) i) Number of siblings j) Weight of a dog k) Checkbook balance ) Eye color t) Movie rating I star, 2 stars, etc )Explanation / Answer
here as above % is based on sample and not complete pupulation
therefore it is a sample statistic
2)
a)
continuous numeric
b) nominal
c) discrete numeric
d)continuous numeric
e) discrete numeric
f) )continuous numeric
g) nominal
h) ordinal
i) discrete numeric
j) )continuous numeric
k) discrete numeric
l)nominal
m) ordinal