Using the binomial distribution, there is a 0.6328 = 63.28% probability that she wins at most 1 prize.
For each box, there are only two possible outcomes, either it has a prize, or it does not. The probability of a box having a prize is independent of any other box, hence, the binomial distribution is used to solve this question.
Binomial probability distribution
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:
- She buys 5 boxes, hence
- 1 in 4 boxes has a prize, hence
The probability is:
Hence:
Then
0.6328 = 63.28% probability that she wins at most 1 prize.
A similar problem is given at brainly.com/question/24863377
The slope of the line 3.33 or 3 1/3
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Start 600
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1st Minute 240
</span></span></span><span><span>2nd Minute </span>96
</span><span><span><span>3rd Minute </span>38.4
</span></span><span><span><span><span>4th Minute </span>15.36
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Answer:
11a-8
Step-by-step explanation:
Please Note that i assume 12a and 2 are positive.
(12a+2−8a+4)-(12−7a+2)
=12a+2-8a+4-12+7a-2
=12a-8a+7a+2+4-12-2
=11a-8