RECREATION An instructor at a swimming pool asked her students if they would be interested in a n advanced swimming course, and
1 answer:
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Using the binomial distribution, there is a 0.3474 = 34.74% probability of getting one wrong number.
<h3>What is the binomial distribution formula?</h3>The formula is:
The parameters are:
- x is the number of successes.
- n is the number of trials.
- p is the probability of a success on a single trial.
For this problem, the values of the parameters are given by:
p = 0.15, n = 10.
The probability of getting one wrong number is P(X = 1), hence:
P(X = 1) = C(10,1) x (0.15)¹ x (0.85)^9 = 0.3474
0.3474 = 34.74% probability of getting one wrong number.
More can be learned about the binomial distribution at brainly.com/question/24863377
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SOLUTION
The object would hit the ground at the root of the equation, that is where h = 0
So we have
Solving the quadratic equation, we have
So we ignore -1 as time cannot be negative.
Hence the object hit the ground in 3 seconds