Recently, a nurse commented that when a patient calls the medical advice line claiming to have...

Recently, a nurse commented that when a patient calls the medical advice line claiming to have the flu, the chance that he or she truly has the flu (and not just a nasty cold) is only about 4%. Of the next 25 patients calling in claiming to have the flu, we are interested in how many actually have the flu.

Find the probability that at least five of the 25 patients actually have the flu. (Round your answer to four decimal places.)

Recently, a nurse commented that when a patient calls the medical advice line claiming to have the flu, the chance that he or she truly has the flu (and not just a nasty cold) is only about 4%. Of the next 25 patients calling in claiming to have the flu, we are interested in how many actually have the flu.

On average, for every 25 patients calling in, how many do you expect to have the flu? (Enter your answer as a whole number.)

Solutions

Expert Solution

Find the probability that at least five of the 25 patients actually have the flu. (Round your answer to four decimal places.)

0.0028

On average, for every 25 patients calling in, how many do you expect to have the flu? (Enter your answer as a whole number.)

The output is:

	25	n
	0.04	p

		cumulative
X	P(X)	probability
0	0.36040	0.36040
1	0.37541	0.73581
2	0.18771	0.92352
3	0.05996	0.98348
4	0.01374	0.99722
5	0.00240	0.99962
6	0.00033	0.99996
7	0.00004	1.00000
8	0.00000	1.00000
9	0.00000	1.00000
10	0.00000	1.00000
11	0.00000	1.00000
12	0.00000	1.00000
13	0.00000	1.00000
14	0.00000	1.00000
15	0.00000	1.00000
16	0.00000	1.00000
17	0.00000	1.00000
18	0.00000	1.00000
19	0.00000	1.00000
20	0.00000	1.00000
21	0.00000	1.00000
22	0.00000	1.00000
23	0.00000	1.00000
24	0.00000	1.00000
25	0.00000	1.00000
	1.00000

	1.000	expected value
	0.960	variance
	0.980	standard deviation

orchestra answered 1 year ago

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