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1 answer:
The following inequality is graphed and attached accordingly:
-22 ≤ x ≤ 24
When two mathematical expressions that aren't equal to each other are brought together into one equation, it is called an inequality.
The inequality signs are:
≠
>
<
These are also referred to as inequality signs:
≤
≥
It is to be noted that zero "0" on the inequality graph is indicative of the fact that the value of x can be zero, greater than zero or less than zero, in which case, it takes on a negative polarity.
Learn more about inequalities at:
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Answer:
Step-by-step explanation:
The variable x, that said the number of customer that will order a nonalcoholic beverage in a sample of n customers follows a binomial distribution. Because we have n identical and independent events with a probability p of success and (1-p) of fail.
So, the probability that x customers will order a nonalcoholic beverage is:
Where n is the size of the sample and p is the probability that a customer order a nonalcoholic beverage, so replacing the values, we get:
Now, the probability that at least 7 will order a nonalcoholic beverage is equal to:
Where:
So, is equal to:
Finally, the probability that in a sample of 10 customers, at least 7 will order a nonalcoholic beverage is equal to 0.1886