A health management firm has samples of satisfaction ratings…

A health management firm has samples of satisfaction ratings from former patients of two hospitals (A, B), and wants to know if one is rated more highly than the other. The information will be used to refer patients and to make suggestions for hospital improvement. Use a 5% level of significance. Classify the two given samples as independent or dependent. image1.jpg    

To illustrate the effects of driving under the influence​ (D…

To illustrate the effects of driving under the influence​ (DUI) of​ alcohol, a police officer brought a DUI simulator to a local high school. Student reaction time in an emergency was measured with unimpaired vision and also while wearing a pair of special goggles to simulate the effects of alcohol on vision. For a random sample of nine​ teenagers, the time​ (in seconds) required to bring the vehicle to a stop from a speed of 60 miles per hour was recorded.  Which statistical inference method should we use to compare their reaction times? Subject 1 2 3 4 5 6 7 8 9   ​Normal, Xi 4.47 4.24 4.58 4.65 4.31 4.80 4.59 5.00 4.79   ​Impaired, Yi 5.77 5.85 5.45 5.32 5.83 5.49 5.23 5.63 5.63