1. Management at a retail store is concerned about the possibility of drug abuse by people who work there. They decide to check on the extent of the problem by having a random sample of the employees undergo a drug test. Several plans for choosing the sample are proposed. Name the sampling strategy in each. a. Randomly select an employee shift and test all the people who work during that shift. b. Choose the fourth person that arrives to work for each shift. c. There are four employee classifications: supervisors, full-time clerks, part-time clerks, and maintenance staff. Randomly select ten people from each category. d. Each employee has a three-digit identification number. Randomly choose 40 numbers. 2. In July 2014, Ingenuity published an article on the colonies of ants. They reported some basic information about many species of ants and the results of some discoveries found by a myrmecologist. Information included the scientific name of the ant species, the geographic location, the depth of the nest (in feet), the number of chambers in the nest, and the number of ants in the colony. It reported that nest designs include vertical, horizontal, or inclined tunnels for movement and transport of food and ants. List the variables. Indicate whether each variable is qualitative or quantitative. If the variable is qualitative, categorize it as either ordinal or nominal. If the variable is quantitative, categorize it as either discrete or continuous. 3. A restaurant uses comment cards to get feedback from its customers about newly added items to the menu. It recently introduced homemade organic veggie burgers. Customers who tried the new burger were asked if they would order it again. The data are summarized in the table below. Write both the fraction and the percent. Round your answers to 1 decimal place. Response Frequency Definitely Would 10 Most Likely Would 40 Maybe 12 Definitely Would Not 3 a. What percentage of customers would definitely order the veggie burger again? b. What percentage of customers would most likely or definitely order the veggie burger again? c. What would be an appropriate method for displaying the data shown in the table?
1. Management at a retail store is concerned about the possibility of drug abuse by people who work there. They decide to check on the extent of the problem by having a random sample of the employees undergo a drug test. Several plans for choosing the sample are proposed. Name the sampling strategy in each. a. Randomly select an employee shift and test all the people who work during that shift. b. Choose the fourth person that arrives to work for each shift. c. There are four employee classifications: supervisors, full-time clerks, part-time clerks, and maintenance staff. Randomly select ten people from each category. d. Each employee has a three-digit identification number. Randomly choose 40 numbers. 2. In July 2014, Ingenuity published an article on the colonies of ants. They reported some basic information about many species of ants and the results of some discoveries found by a myrmecologist. Information included the scientific name of the ant species, the geographic location, the depth of the nest (in feet), the number of chambers in the nest, and the number of ants in the colony. It reported that nest designs include vertical, horizontal, or inclined tunnels for movement and transport of food and ants. List the variables. Indicate whether each variable is qualitative or quantitative. If the variable is qualitative, categorize it as either ordinal or nominal. If the variable is quantitative, categorize it as either discrete or continuous. 3. A restaurant uses comment cards to get feedback from its customers about newly added items to the menu. It recently introduced homemade organic veggie burgers. Customers who tried the new burger were asked if they would order it again. The data are summarized in the table below. Write both the fraction and the percent. Round your answers to 1 decimal place. Response Frequency Definitely Would 10 Most Likely Would 40 Maybe 12 Definitely Would Not 3 a. What percentage of customers would definitely order the veggie burger again? b. What percentage of customers would most likely or definitely order the veggie burger again? c. What would be an appropriate method for displaying the data shown in the table?
College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter8: Sequences, Series, And Probability
Section8.7: Probability
Problem 8E: List the sample space of each experiment. Picking a one-digit number
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1. Management at a retail store is concerned about the possibility of drug abuse by people who work there. They decide to check on the extent of the problem by having a random sample of the employees undergo a drug test. Several plans for choosing the sample are proposed. Name the sampling strategy in each.
a. Randomly select an employee shift and test all the people who work during that shift.
b. Choose the fourth person that arrives to work for each shift.
c. There are four employee classifications: supervisors, full-time clerks, part-time clerks, and maintenance staff. Randomly select ten people from each category.
d. Each employee has a three-digit identification number. Randomly choose 40 numbers.
2. In July 2014, Ingenuity published an article on the colonies of ants. They reported some basic information about many species of ants and the results of some discoveries found by a myrmecologist. Information included the scientific name of the ant species, the geographic location, the depth of the nest (in feet), the number of chambers in the nest, and the number of ants in the colony. It reported that nest designs include vertical, horizontal, or inclined tunnels for movement and transport of food and ants.
List the variables. Indicate whether each variable is qualitative or quantitative. If the variable is qualitative, categorize it as either ordinal or nominal. If the variable is quantitative, categorize it as either discrete or continuous.
3. A restaurant uses comment cards to get feedback from its customers about newly added items to the menu. It recently introduced homemade organic veggie burgers. Customers who tried the new burger were asked if they would order it again. The data are summarized in the table below. Write both the fraction and the percent. Round your answers to 1 decimal place.
Response |
Frequency |
Definitely Would |
10 |
Most Likely Would |
40 |
Maybe |
12 |
Definitely Would Not |
3 |
a. What percentage of customers would definitely order the veggie burger again?
b. What percentage of customers would most likely or definitely order the veggie burger again?
c. What would be an appropriate method for displaying the data shown in the table?
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