APPLIED MATHEMATICS UNIT 4 EXAM WITH VERIFIED ANSWERS #4
A behavioral economist studies transportation habits in an urban center. She identifies 4
bus routes that connect to 3 different light rail routes available to participants in the
study. Before she interviews participants, she must determine the number of possible
routes participants can choose to use. Which expression represents the number of
available options? - correct answer 4 × 3
A psychologist designs an 8-item pain survey asking athletes to identify their level of
pain after a football injury. She is considering a 5-point scale. How many different ways
could a person answer the survey? - correct answer there are 5^8 possible ways to
answer the survey with a 5-point scale.
A candidate for mayor plans to campaign at 5 shopping malls before the election. In
how many different ways can the candidate schedule the visits? - correct answer 120
A social scientist conducts a study with 10 subjects. In which situations is a permutation
necessary to determine the number of possible outcomes? - correct answer schedule
interviews for all 10 subjects.
Create a seating chart for the 10 subjects around a table.
A psychologist plans an experiment in which subjects draw an object based on a verbal
description. For each trial, one person draws, one reads the description, and one
records how long it takes to get a successful drawing.
From a group of 8 people, in how many ways can the psychologist select a person to
draw, a person to read, and a person to record time? - correct answer xxx 243
Match the expected number of fatalities to the actual number of fatalities. - correct
answer actual fatalities from diabetes : 35 people
Expected fatalities from diabetes : 29 people
Actual fatalities from tobacco use : 25 people
Expected fatalities from tobacco use : 44 people
Actual fatalities from high blood pressure : 75 people
Expected fatalities from high blood pressure : 64 people
A quality control specialist for a large computer store conducted a random sample of
150 laptops from its stock. She found 3 did not turn on and 5 required system updates
to run properly. What is a reasonable probability model for the laptops the store has in
stock? - correct answer 94.7% of the laptops will function properly.
A behavioral economist studies transportation habits in an urban center. She identifies 4
bus routes that connect to 3 different light rail routes available to participants in the
study. Before she interviews participants, she must determine the number of possible
routes participants can choose to use. Which expression represents the number of
available options? - correct answer 4 × 3
A psychologist designs an 8-item pain survey asking athletes to identify their level of
pain after a football injury. She is considering a 5-point scale. How many different ways
could a person answer the survey? - correct answer there are 5^8 possible ways to
answer the survey with a 5-point scale.
A candidate for mayor plans to campaign at 5 shopping malls before the election. In
how many different ways can the candidate schedule the visits? - correct answer 120
A social scientist conducts a study with 10 subjects. In which situations is a permutation
necessary to determine the number of possible outcomes? - correct answer schedule
interviews for all 10 subjects.
Create a seating chart for the 10 subjects around a table.
A psychologist plans an experiment in which subjects draw an object based on a verbal
description. For each trial, one person draws, one reads the description, and one
records how long it takes to get a successful drawing.
From a group of 8 people, in how many ways can the psychologist select a person to
draw, a person to read, and a person to record time? - correct answer xxx 243
Match the expected number of fatalities to the actual number of fatalities. - correct
answer actual fatalities from diabetes : 35 people
Expected fatalities from diabetes : 29 people
Actual fatalities from tobacco use : 25 people
Expected fatalities from tobacco use : 44 people
Actual fatalities from high blood pressure : 75 people
Expected fatalities from high blood pressure : 64 people
A quality control specialist for a large computer store conducted a random sample of
150 laptops from its stock. She found 3 did not turn on and 5 required system updates
to run properly. What is a reasonable probability model for the laptops the store has in
stock? - correct answer 94.7% of the laptops will function properly.
