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 White 354 Yellow Red Blue 93 Black Controls (not injured) Cases (injured or killed) 461 29 156 201 109 64 45 Click here to view the chi-square distribution table. Identify the null and alternative hypotheses. Choose the correct answer below. O A. Hg: Whether a crash occurs and helmet color are independent H: Whether a crash occurs and helmet color are dependent O B. Ho: Whether a crash occurs and helmet color are dependent H,: Whether a crash occurs and helmet color are independent OC. Ho: Injuries and helmet color are dependent H: Injuries and helmet color are independent O D. Ho: Injuries and helmet color are independent H: Injuries and helmet color are dependent

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A: The claim is that for a smartphone​ carrier's data speeds at​ airports, the mean is μ=16.00.

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Q: What is hypothesis testing?

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A: Significance level is increasedAnswer and expaination is provided below

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Q: What it means to find significant results from a hypothesis test?

A: Introduction :-  To explain what it means to find significant results from a hypothesis test.

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.