Answer: irdk
Step-by-step explanation:
Using the binomial distribution, it is found that there is a 0.056 = 5.6% probability that more than 7 will make a purchase.
<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:
- There are 12 customers, hence n = 12.
- The probability of any of them making a purchase is of p = 0.4.
The probability that more than 7 will make a purchase is given by:
P(X > 7) = P(X = 8) + P(X = 9) + P(X = 10) + P(X = 11) + P(X = 12).
Hence:
Then:
P(X > 7) = P(X = 8) + P(X = 9) + P(X = 10) + P(X = 11) + P(X = 12) = 0.042 + 0.012 + 0.02 + 0 + 0 = 0.056.
0.056 = 5.6% probability that more than 7 will make a purchase.
More can be learned about the binomial distribution at brainly.com/question/24863377
20 + 5x, is the equation I assume you're looking for. Do you need the table as well?
One of many attributes or properties of a rhombus is that the diagonals are perpendicular bisectors of each other: Knowing this makes the measure of angle AED = 90
Answer:
Step-by-step explanation:
<u><em>The correct question is</em></u>
Find the cosine of ∠A
The picture in the attached figure
we know that
In the right triangle ABC
The cosine of angle A is equal to divide the adjacent side to angle A by the hypotenuse of the right triangle
so
----> by CAH
substitute the given values