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miv72 [106K]
4 years ago
15

Suppose that an experiment is repeated four times. A certain event has probability 1/10 in a single repetition of the experiment

.
What is the probability that the event occurs every time in the 4 trials?
What is the probability that it never occurs?
What is the probability that it occurs at least once?
What is the probability that it occurs in the fourth trial only?
Mathematics
2 answers:
Mazyrski [523]4 years ago
8 0
Best thing you can do in order to answer all of this is to use the <span>Bernoulli trials. You can look for it and see if the answers I'm giving you are correct:
</span><span>Probability of occurring 4 times = (1/10)^4
Probability of never occurring = (9/10)^4
Probability that it occurs at least once = 1 - (9/10)^4
Probability that it occurs in the fourth trial only = (9/10)^3 * 1/10
</span>I think this is going to be very helpful
Basile [38]4 years ago
3 0

Answers:

1/10,000

6561/10,000

3439/10,000

729/10,000

Step-by-step explanation:

Plug in (1/10)^4

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Answer:

There were 26 students in his class and the teacher had 83 ml of the solution.

Step-by-step explanation:

Mr. Kohl has a "x" amount of solution, if he divides it by the number of students "n" he'll give each student 3 milliliters  and have a left over of 5 milliliters. If the amount of solution Mr. Kohl had was "x + 21" then he'd be able to give each student 4 milliliters of the solution. From these informations we have:

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Now that we have two equations and two variables we can solve the system of equations, as seen bellow:

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Step-by-step explanation:

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