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Naily [24]
2 years ago
9

Two antibiotics are available as treatment for a common ear infection in children. • Antibiotic A is known to effectively cure t

he infection 60 percent of the time. • Antibiotic B is known to effectively cure the infection 90 percent of the time. The antibiotics work independently of one another. Both antibiotics can be safely administered to children. A health insurance company intends to recommend one of the following two plans of treatment for children with this ear infection. • Plan I: Treat with antibiotic A first. If it is not effective, then treat with antibiotic B. • Plan II: Treat with antibiotic B first. If it is not effective, then treat with antibiotic A. (a) If a doctor treats a child with an ear infection using plan I, what is the probability that the child will be cured? (b) If a doctor treats a child with an ear infection using plan II, what is the probability that the child will be cured?
Mathematics
1 answer:
Scrat [10]2 years ago
5 0

Step-by-step explanation:

the probability of A working is 60% or 0.6, so the probability it does not work is 40% or 0.4.

the probability of B working is 90% or 0.9, so the probability it does not work is 10% or 0.1.

plan 1

it is the probabilty that either A works, or (if it is not working) B works.

0.6 + 0.4×0.9 = 0.6 + 0.36 = 0.96

plan 2

either B works, or (if it is not working) A works

0.9 + 0.1×0.6 = 0.9 + 0.06 = 0.96

both plans have the same success probability.

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3 years ago
What is( 5×100)+(6x10)+(8×1/10)+(9×1/1,000) in standard form
nadya68 [22]

Answer:

6x^10+2504/5+(9*1/1,0)

Step-by-step explanation:

Hope this helps :)

5 0
3 years ago
Harriet has $616 to buy desks for a new office. She needs 15 desks in all, and decides to buy 2 types of desks. Type A desks cos
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Harriet can buy 7 of type a and 8 of type b

3 0
3 years ago
A certain element has a half life of 2.5 billion years. a. You find a rock containing a mixture of the element and lead. You det
sashaice [31]

Answer:

Step-by-step explanation:

For a first order decay, fraction remaining = 0.5n where n = number of half lives elapsed.

fraction remaining = 55% = 0.55

0.55 = 0.5n

log 0.55 = n log 0.5

-0.2596 = -0.301 n

n = 0.8625 = # of half lives elapsed

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b)  0.15 = 0.5n

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7 0
3 years ago
7=11t
joja [24]

Steps to solve:

7 = 11t

~Divide 11 to both sides

7/11 = 11t/11

~Simplfy

7/11 = t

The fraction can't be simplified any further.

Best of Luck!

5 0
3 years ago
Read 2 more answers
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