Introduce the following notations of events:
A "The person has the disease"
B "The test is positive", C "the test is erroneous"
Our formula will be then:
So the probability we are looking for is 0.19
<h3>Question: Explain why the researchers used data from ten trails and averaged them, rather than data from a single trail.</h3>
Answer : Because in all experiments there are several factors that can affect the result. Repeating the experiment several times can vary the factors and compensate the measurement errors. Therefore, the average of the results is calculated to find the result that is closest to the set of all the results, being more reliable than a single result of an individual experiment.
Hope this helps!
Exact form: 11/6
decimal form: 1.83333333
mixed number: 1 5/6
600 miles is the total and a rate of 30 mi per 0.3 in
600 divided by 30 = 20 units
each unit is 0.3 inches
20*0.3 = 6
6 inches