The answer is 12 because you divide 204 by 17 to get what x is
Answer:
The probability that fewer than 30 buy a packet after tasting a free sample is approximately
B. 0.9938
Step-by-step explanation:
We have
p = 0.2
q = 1 - 0.2 = 0.8
n = 100
and we need to compute P(X<30). First we need to check if normal distribution can be used or not. If np>5 then we can use normal distribution to solve this problem.
np = 100*0.2 = 20 > 5.
So we can use the normal approximation to solve this problem.
μ = np = 20
σ = √(npq)
= √(100)(0.2)(0.8)
σ = 4
We know that z = (X - μ)/σ, So
P(X<30) = P[(X-μ)/σ < (30 - μ)/σ]
= P(z<(30-20)/4)
= P(z < 10/4)
= P (z<2.5)
Using the normal distribution probability table, we get:
P(z<2.5) = 0.9938
<u>So, the correct option is </u><u>B. 0.9938</u>
Answer:
9836523
is the answer. just check
The answer to the question is: Yes.
Explanation: It can be solved by following exactly the same procedures
that solved the other two questions that you posted within the past 15 minutes.
Since I'm here already, here is the solution to this one:
6x² + 18x = 0
Divide each side of the equation by 6 :
x² + 3x = 0
Factor the left side:
x(x+ 3) = 0
This statement is true if x=0 or if x=3.
The solution to this one is even the same as the solution to the last one you posted.
You really ought to take a break, go back, review the solutions you've been given,
and try to solve a few on your own.
