(Solved) MATH225 Week 4 Assignment Contingency Tables

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 odds ratio for birds having long beaks being able to fly against birds not having long beaks being able to fly? 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 do not go to the beach AND do not go to the mountains.

Question

Fill in the following contingency table and find the number of students who both read mysteries AND read comics.

Question

Fill in the following contingency table and find the number of students who both do not play sports AND do not play an instrument.

Question

Given the contingency table below, determine the marginal distribution of the toys’ colors. Round your answer(s) to the nearest whole number. Select all that apply

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 having long beaks for those birds that fly? Round your answer to two decimal places.

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 odds ratio for people wearing cotton clothes being depressed against people not wearing cotton clothes being depressed? Round your answer to two decimal places.

Question

Given the contingency table below, determine the marginal distribution of vegetarians and non-vegetarians. Round your answer(s) to the nearest whole number. Select all that apply.

Question

Fill in the following contingency table and find the number of students who both do not have a cat AND do not have a dog.

Question

Fill in the following contingency table and find the number of students who both play sports AND play an instrument.

Provide your answer below:

Question

Fill in the following contingency table and find the number of students who both play sports AND play an instrument.

Provide your answer below:

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.

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.

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

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

Provide your answer below

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.

Question

A survey of 140 employed citizens was conducted and the results are shown in the table above. Given that a randomly selected survey participant does not work in an office, what is the probability that this person works on Saturday?

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.

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

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