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rachel63892
03.11.2020 •
Mathematics
A manufacturer of televisions subjects the equipment to a comprehensive testing process for all essential functions before the television leaves the factory. If the probability of passing these comprehensive tests is .95 and if 10 televisions are randomly selected what is that probability that at least 9 pass the test
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Ответ:
The probability is![P(X \le 9) =0.9138](/tpl/images/0863/4508/87f51.png)
Step-by-step explanation:
From the question we are told that
The probability of the television passing the test is p = 0.95
The sample size is n = 10
Generally the comprehensive testing process for all essential functions follows a binomial distribution
i.e
and the probability distribution function for binomial distribution is
Here C stands for combination hence we are going to be making use of the combination function in our calculators
Generally the probability that at least 9 pass the test is mathematically represented as
=>![P(X \le 9) = [^{10}C_9 * (0.95)^9 * (1- 0.95)^{10-9}]+ [^{10}C_{10} * {0.95}^{10} * (1- 0.95)^{10-10}]](/tpl/images/0863/4508/54dd6.png)
=>![P(X \le 9) = [10 * 0.6302 * 0.05 ]+ [1 *0.5987 * 1 ]](/tpl/images/0863/4508/baee6.png)
=>![P(X \le 9) =0.9138](/tpl/images/0863/4508/87f51.png)
Ответ:
the length is approximately 13
Step-by-step explanation:
If a triangle has a hypotenuse, this means that it is right triangle. Knowing that it is right triangle we can use the Pythagorean Theorem
Pythagorean Theorem: