2 years ago

Need help now thx i award 20 p

1 answer:

Tema [17]2 years ago

7 0

The discriminant is 37

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qwelly [4]

Answer: The probability that both televisions work is 0.5625 .

The probability at least one of the two televisions does not work is 0.4375.

Step-by-step explanation:

Given : Number of televisions received in shipment= 12

Number of defective televisions received in shipment= 3

Then proportion of defective televisions = $\dfrac{3}{12}=0.25$

Using binomial probability formula, the probability of getting success in x trials is given by :-

$P(x)=^nC_xp^x(1-p)^{n-x}$

If two televisions are randomly selected, then the probability that both televisions work will be :-

$P(0)=^2C_0(0.25)^0(0.75)^2=(0.75)^2=0.5625$

The probability at least one of the two televisions does not work will be :-

$P(x\geq1)=1-P(0)=1-0.5625=0.4375$

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2 years ago

kolezko [41]

8/36 because:
8+16+12=36
and if you simplify it the answer will be 4/18 2/9

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sukhopar [10]

Let’s use y as a replacement for a number. You would do 3y-7 since you multiply by three and take away seven.

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Serhud [2]

There is a decrease in power. It can be concluded that there has also been a change in:

A) current or voltage.

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dalvyx [7]

If 5 bags of pretzels cost $10, then the pretzels are $2 per bag.

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