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
Answer:
<em><u>X=-8 B if i can get brainliest that would be great</u></em>
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
4(2x+1)=6x−12
(4)(2x)+(4)(1)=6x+−12(Distribute)
8x+4=6x+−12
8x+4=6x−12
Step 2: Subtract 6x from both sides.
8x+4−6x=6x−12−6x
2x+4=−12
Step 3: Subtract 4 from both sides.
2x+4−4=−12−4
2x=−16
Step 4: Divide both sides by 2.
2x/2=−16/2
x=−8
Answer:
x=−8
First we think of a 3 digit dividend for example 100.
Next we think of a divisor between 10 and 29 for example 20.
We divide 100÷20=5
Here's a division problem:
Sophia has 100 pencils. She has 20 boxes with the same number of pencils in them. How many pencils does Sophia put her box?
Divide 100 by 20 which equals 5
Your answer is 5
Answer:
120
Step-by-step explanation:
you do 3*4=12
12*10=120
Yes, 4 is the right answer.