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# Please don't copy another solution. Make it original! Highway safety engineers test new road signs, hoping...

## Question

###### Please don't copy another solution. Make it original! Highway safety engineers test new road signs, hoping...

Please don't copy another solution. Make it original!

Highway safety engineers test new road signs, hoping that increased reflectivity will make them more visible to drivers. Volunteers drive through a test course with several of the new- and old-style signs and rate which kind is more visible.

a. State null and alternative hypotheses to test if the new road signs increase visibility.

b. ​​​​​​​In this context, what would a Type I error be?

c. ​​​​​​​​​​​​​​In this context, what would a Type II error be?

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