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Lorico [155]
3 years ago
11

The probability of the number of defective circuit boards in a shipment is given in the tables for two different companies. Comp

any A A 5-column table has 2 labeled rows. The first row is labeled Number defective (x) with entries 0, 1, 2, 3. The second row is labeled P (x i) with entries 0.21, 0.30, 0.41, 0.08. Company B A 5-column table has 2 labeled rows. The first row is labeled Number defective (x) with entries 0, 1, 2, 3. The second row is labeled P (x i) with entries 0.18, 0.32, 0.28, 0.22. What is the expected number of defective circuit boards for company A? What is the expected number of defective circuit boards for company B? Which company should be chosen for purchasing circuit boards? Explain.
Mathematics
2 answers:
Evgen [1.6K]3 years ago
8 0

Answer: company A: 1.36

company B: 1.54 A; lowest expected number of defective boards

Step-by-step explanation:

i got it right on edge

maxonik [38]3 years ago
8 0

Answer:

Step-by-step explanation:

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Evaluate the expression 2/5+3/4 / 1/2
hram777 [196]
(0.4+0.75)/0.5
Your answer is 2.3

UPDATE
the answer is either 2 (3/10) as a mixed number or 23/10 as an improper fraction

8 0
4 years ago
Find the diameter of the base of a right cylinder if the surface area is 128(pi) and the height is 12cm.
Gelneren [198K]
d=2r\\
A=128 \pi \\
A=2 \pi  r^{2} +2 \pi rh \\\\
2 \pi  r^{2} +2 \pi rh = 128 \pi \\
2 r^{2} +2rh = 128\\
2 r^{2}+24r-128=0\\
r^{2}+12r-64=0\\
delta=400\\
r_{1/2} = -16/4 \\
r=4cm\\
d=8cm\\


Radius / diameter as a length cannot be negative, that's why '-16' is wrong.
8 0
4 years ago
On Tuesday Susie buys three new video games from the store. On Wednesday, she sells half of her video games in order to make ext
bazaltina [42]

Answer:she had 11 video games on Monday.

Step-by-step explanation:

Let x represent the number of video games that Susie had initially.

On Tuesday, Susie buys three new video games from the store. This means that the total number of video games that Susie had would be x + 3

On Wednesday, she sells half of her video games in order to make extra money. This means that the number of video games that she sold is

(x + 3)/2. The number of video games left would be

x - (x + 3)/2

If she has 4 video games left after selling, it means that

x - (x + 3)/2 = 4

2x - (x + 3) = 8

2x - x - 3 = 8

x - 3 = 8

x = 8 + 3 = 11

4 0
3 years ago
$250 at 6% for 4 years find the interest
MariettaO [177]

Answer:

I=60

Step-by-step explanation:

So

P=$250

R=6%

T=4

So to get the answer we would need to multiply everything to get the interest so the answer would be 60 because 250 times 6% equals to 15 then we would multiply 15 by 4 and then get out answer of $60 interest.

5 0
3 years ago
Hi! Can I please have some help and can you please show me how you got your answer? thank you!
Mama L [17]
Answer: -5z+13
Step by step:
6z-5
-z-8 now you add -5, and -8 and it becomes positive. And then you subtract 6z and -z
You get -5z+13
5 0
3 years ago
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