Homework: HW 11.2 Question 3, 11.2.16 Part 2 of 4 HW Score: 85%, 3.4 of 4 points

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Homework: HW 11.2

Question 3, 11.2.16

Part 2 of 4

HW Score: 85%, 3.4 of 4 points

Points: 0.4 of 1

Part 1

A case-control (or retrospective) study was conducted to investigate a relationship between the colors of helmets worn by motorcycle drivers and whether they are injured or killed in a crash. Results are given in the accompanying table. Using a

0.05 significance level, test the claim that injuries are independent of helmet color.

Color of Helmet

Black White Yellow Red Blue

Controls (not injured) 474 346 27 161 115

Cases (injured or killed) 209 103 7 67 55

Identity the null and alternative hypotheses?

Compute the test statistic?

Find the critical value?

What is the conclusion based on the hypothesis test?

Posted Date: May 19, 2024 09:09 PM

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Homework: HW 11.2 Question 3, 11.2.16 Part 2 of 4 HW Score: 85%, 3.4 of 4 points

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