2. A light fixture contains 6 light bulbs. With normal use, each bulb has a 0.85
1 answer:
Using the binomial distribution, it is found that there is a 0.38 = 38% theoretical probability that all 6 bulbs will last for 4 months.
<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.
In this problem, we have that:
- There are 6 bulbs, hence n = 6.
- Each bulb has a 0.85 chance of lasting for at least 4 months, hence p = 0.85.
The probability that all 6 bulbs will last for 4 months is P(X = 6), hence:


More can be learned about the binomial distribution at brainly.com/question/24863377
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