The table below displays the results of a study investigating the effectiveness of bicycle safety helmets in preventing head injury. The data consist of a random sample of 800 bicyclists who were involved in bicycle accidents. Wearing a Helmet Yes No Total Yes 20 220 240 Head Injury No 130 430 560 Total 150 650 800 What is the probability of obtaining a head injury given that the bicyclist was not wearing a helmet? Round to two decimal places.

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The table below displays the results of a study investigating the effectiveness of bicycle safety
helmets in preventing head injury. The data consist of a random sample of 800 bicyclists who were
involved in bicycle accidents.
Wearing a Helmet
Yes
No
Total
Yes
20
220
240
Head Injury
No
130
430
560
Calculate the Relative Risk. Round to two decimal places.
Total
150
650
800
Transcribed Image Text:The table below displays the results of a study investigating the effectiveness of bicycle safety helmets in preventing head injury. The data consist of a random sample of 800 bicyclists who were involved in bicycle accidents. Wearing a Helmet Yes No Total Yes 20 220 240 Head Injury No 130 430 560 Calculate the Relative Risk. Round to two decimal places. Total 150 650 800
The table below displays the results of a study investigating the effectiveness of bicycle safety
helmets in preventing head injury. The data consist of a random sample of 800 bicyclists who were
involved in bicycle accidents.
Wearing a Helmet
Yes
No
Total
Yes
20
220
240
Head Injury
No
130
430
560
Total
150
650
800
What is the probability of obtaining a head injury given that the bicyclist was not wearing a helmet?
Round to two decimal places.
Transcribed Image Text:The table below displays the results of a study investigating the effectiveness of bicycle safety helmets in preventing head injury. The data consist of a random sample of 800 bicyclists who were involved in bicycle accidents. Wearing a Helmet Yes No Total Yes 20 220 240 Head Injury No 130 430 560 Total 150 650 800 What is the probability of obtaining a head injury given that the bicyclist was not wearing a helmet? Round to two decimal places.
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