Q1
In a study about political preferences, a researcher randomly selected an equal number of men and women to survey.
Is the study observational or experimental? If it is an experiment, what is the controlled factor?
Ans: The study is an observational study.
Q2
A survey was given where students in a class were asked to state their eye color. What is the level of measurement of the data?
Ans: Nominal
Q3
Matthew wants to estimate the mean height of clients attending his store. He records the heights of 100 randomly selected clients attending the store. What is the population?
Ans: all the clients attending the store
Q24
A deck of cards contains red cards numbered 1,2,3,4,5,6 and blue cards numbered 1,2,3,4. Let R be the event of drawing a red card, B be the event of drawing a blue card, E be the event of drawing an even-numbered card, and O be the event of drawing an odd card.
Drawing the blue 4 is an example of which of the following events? Select all correct answers.
Ans:
R
B OR O
R OR E
Q25
Fill in the following contingency table and find the number of students who both go to the beach AND go to the mountains.
Ans: 10……………………..please follow the link below to purchase solution at $20
