Use four decimal places in your answers for this problem.
Eighteen (18) people in a department of 162 are fully trained in CPR and AED. A person shows signs of a heart attack. Five (5) people respond. What is the probability that NO (0) person who responded is trained to treat the victim? (Show all of your calculations)
Use three decimal places in your answers for this problem.
An airline company claims their arrivals are on time within an average of +/- 5 minutes and a standard deviation of 2.82 minutes; Normally Distributed. You sample 50 arrivals and find an average of 6.3 minutes late. Can you be at least 90% sure that the airline company's claim is correct? (Show all of your calculations)
Here we know that P(Trained) = 18/162=0.1111
So p=0.1111 q=1-0.1111=0.8889
This is binomial distribution we need to calculate P(r=0, n=5) = 5C0*p^0*q^5
=0.554963641 or 0.5550
Use three decimal places in your answers for this problem. ...
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