8 (14 pts). The percentage of customer satisfaction for a ho…

8 (14 pts). The percentage of customer satisfaction for a hotel was 73% last year. The manager wants to know whether there is any difference of customer satisfaction between this year and last year. A survey of 544 customers shows that 386 customers are satisfied. (a)  What is the population? What is the sample? (b) At α = 0.05 level of significance, determine whether there is evidence that the percentage of customer satisfaction this year is different from 73%. (c) Identify the type of error for your conclusion. Find the probability of error and probability of confidence if it is type I error.

Using a four-cuff setup on the right lower extremity, the ex…

Using a four-cuff setup on the right lower extremity, the examiner notes a high-thigh cuff pressure of 130mmHg, with the remaining pressures averaging 115mmHg.  The higher brachial pressure is 160 mmHg.  All of the following significant conditions could produce these findings, EXCEPT:

6 (14 pts). A survey wants to know whether people in a city…

6 (14 pts). A survey wants to know whether people in a city with ages 16-19 years old spend less than 2 hours on TV daily. A sample of 600 people with the ages 16-19 show the sample mean x– = 1.9 hours. Suppose the population standard deviation σ = 0.3 hour. (a) What is the population? What is the sample? (b) At α = 0.01 level of significance, determine whether there is evidence that that the population mean is less than 2 hours. (c) Identify the type of error for your conclusion. Find the probability of error and probability of confidence if it is type I error.

Your next patient is complaining of pain in his left calf mu…

Your next patient is complaining of pain in his left calf muscle every time he gets to the third hole at the gold course.  As you scan your patient’s proximal superficial femoral artery you get PSVs of 52cm/s.  Just distal to that you find flows of 258 cm/s.  What would your preliminary report include?