Question
A survey of 155 employed citizens was conducted and the results are shown in the table below. Given that a randomly selected survey participant does not work in an office, what is the probability that this person works on Saturday?
- Enter your answer as a fraction.
Does not Work in an Office | Works in an Office | Total | |
Does not Work Saturday | 32 | 62 | 94 |
Works Saturday | 14 | 47 | 61 |
Total | 46 | 109 | 155 |
Question
Fill in the following contingency table and find the number of students who both play sports AND play an instrument.
Students | Play an instrument | Do not play an instrument | Total |
Play sports | 57 | ||
Do not play sports | 10 | ||
Total | 67 | 99 |
Question
Fill in the following contingency table and find the number of students who both have a cat AND have a dog.
Question
Researchers wanted to study if couples having children are married. They surveyed a large group of people. The data are shown in the contingency table below. What is the relative risk of having children for those who are married? Round your answer to two decimal places.
Question
Given the contingency table below, determine the marginal distribution of breakfast and lunch. Round your answer(s) to the nearest whole number. Select all that apply.
Food | Bread | Rice | Total |
Breakfast | 122 | 189 | 311 |
Lunch | 420 | 263 | 683 |
Total | 542 | 452 | 994 |
Question
Researchers wanted to study if wearing cotton clothes is related to depression. They surveyed a large group of people. The data are shown in the contingency table below. What is the relative risk of wearing cotton clothes for those who are depressed? Round your answer to two decimal places.
Question
Given the contingency table below, determine the marginal distribution of the bread and rice. Round your answer(s) to the nearest whole number. Select all that apply.
Food | Bread | Rice | Total |
Breakfast | 122 | 189 | 311 |
Lunch | 420 | 263 | 683 |
Total | 542 | 452 | 994 |
Question
Given the contingency table below, determine the marginal distribution of the toys’ shapes. Round your answer(s) to the nearest whole number. Select all that apply.
Toys | Black | White | Total |
Round | 3 | 7 | 10 |
Square | 5 | 2 | 7 |
Total | 8 | 9 | 17 |
Question
Researchers want to study whether or not a fear of flying is related to a fear of heights. They surveyed a large group of people and asked them whether or not they had a fear of flying and whether or not they had a fear of heights. The data are shown in the contingency table below. What is the relative risk of being afraid of flying for those who are afraid of heights? Round your answer to two decimal places.
Question
Researchers wanted to study if having a long beak is related to flight in birds. They surveyed a total of 34 birds. The data are shown in the contingency table below. What is the relative risk of flying for those birds that have long beaks? Round your answer to two decimal places.
Question
Fill in the following contingency table and find the number of students who both watch comedies AND watch dramas.
Question
Fill in the following contingency table and find the number of students who both have a cat AND have a dog.
Students | have a dog | do not have a dog | Total |
have a cat | 49 | ||
do not have a cat | 17 | ||
Total | 46 | 98 |
Solution:
A survey of 155 employed citizens was conducted and the results are shown in the table below. Given that a randomly selected survey participant does not work in an office, what is the probability that this person works on Saturday?
- Enter your answer as a fraction.
Does not Work in an Office | Works in an Office | Total | |
Does not Work Saturday | 32 | 62 | 94 |
Works Saturday | 14 | 47 | 61 |
Total | 46 | 109 | 155 |
Answer: 7/23
Fill in the following contingency table and find the number of students who both play sports AND play an instrument.
Students | Play an instrument | Do not play an instrument | Total |
Play sports | 57 | ||
Do not play sports | 10 | ||
Total | 67 | 99 |
Answer: 35
Fill in the following contingency table and find the number of…Please click the icon below to download the solution at $5