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Iteru [2.4K]
2 years ago
15

At a Noodles & Company restaurant, the probability that a customer will order a nonalcoholic beverage is .42. Find the proba

bility that in a sample of 6 customers, at least 3 of the 6 will order a nonalcoholic beverage
Mathematics
1 answer:
pashok25 [27]2 years ago
6 0

Answer:

0.497

Step-by-step explanation:

Using the binomial probability formula :

P(x =x) = nCx * p^x * (1 - p)^(n - x)

From the question :

n = 6 ; x = 3 ; p = 0.42

P(x = 3) +... P(x = 6)

P(x = 3) = 6C3 * 0.42^3 * (1 - 0.42)^(6-3)

P(x = 3) = 20 * 0.074088 * 0.195112

P(x = 3) = 0.28910915712

Then find p(x = 4).. + p(x = 6)

Using a calculator :

P(X >= x) = 0.497

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9+3r<2+2r and -3-5r<6-4r
Nimfa-mama [501]

Answer:

-9 < r < -7

Step-by-step explanation:

9 + 3r < 2 + 2r

r < -7

-3 - 5r < 6 - 4r

-9 <  r

r > -9

-9 < r < -7

8 0
3 years ago
Simplify the expression -2x(x+3) A: -x -6 B: -x + 6 C: -2x + 6 D: -2x - 6​
Leni [432]

Answer:

D

Step-by-step explanation:

-2x(x+3)

-2x-6

3 0
3 years ago
Add 1 1/3+(−5/6) <br><br> brainliest given to the right answer
4vir4ik [10]
1 and 1/3 is 3/3 and 1/3 so is 4/3 then

4/3 -5/6 they have to have the same denominators so multiply the first fraction with 2/2

(4•2/3•2)-5/6=(8/6)-(5/6)= (8-5)/6=3/6 that you can simplify as 1/2

4 0
4 years ago
Read 2 more answers
Which number produces a rational number when multiplied by 0.4
Katyanochek1 [597]
A, B and D are already rational numbers, 0.4 itself is a rational number, two rational numbers make a product of rational number. 
So A, B, D are the correct choices. 

Are you sure it asks for rational numbers, not irrational number?
7 0
3 years ago
Read 2 more answers
If n and k are positive integers, is n divisible by 6 ? (1) n = k(k + 1)(k – 1) (2) k – 1 is a multiple of 3.
xz_007 [3.2K]

Answer: yes, it is

Step-by-step explanation:

A number is divisible by 6 if it is divisible by 2 and 3 simultaniously.

n = k(k+1)(k-1)

If k-1 is a multiple of 3, n is divisible by 3, so one of the requirements is ok.

Now, if k-1 is a multiple of 3, it can be even or odd.

if k-1 is even, then it is divisible by 2 and as it is divisible by 3 as well, n is divisible by 6

if k-1 is odd, then k and k+1 is even, hence, divisible by 2.

As n = k(k+1)(k-1), n is also divisible by 6.

4 0
3 years ago
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