A study is conducted to determine the extent to which drinking alcohol impairs driving ability. Forty...

A study is conducted to determine the extent to which drinking alcohol impairs driving ability. Forty volunteers are each tested twice on a computer simulated driving course, once while sober and once while intoxicated. The tests took place over two days and the order of the treatments were randomly assigned to each volunteer. One of the variables measured is the response time (in seconds) to a certain stimuli. The mean difference in response times measured while intoxicated versus sober is 0.914 seconds with standard deviation 1.496 seconds.

What is the null & alternative hypothesis?

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Expert Solution

The null hypothesis is :

There is no difference between the population mean response time between when the person is sober() vs when the person is intoxicated()

The alternative hypothesis is:

The population mean response time when the person is sober() is less than when the person is intoxicated()

Let me know in the comments if anything is not clear. I will reply ASAP! Please do upvote if satisfied!

orchestra answered 1 year ago

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