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7nadin3 [17]
4 years ago
6

a marketing survey compiled data on the total number of televisions in households where k is a positie constant. What is the pro

bability that a randomly chosen household has at least two televisions?
Mathematics
1 answer:
MariettaO [177]4 years ago
3 0

Hi, you have not provided the distribution, I'll solve the problem for a particular distribution and you can apply the same method for yours.

Answer:

0.39

Step-by-step explanation:

X is the random event and P(X) is the probability of the event X, therefore, X is the number of  televisions

Distribution:

X        0         1         2        3       4         5

P(X)    0.24   0.37   0.20   0.11   0.05   0.03

When they ask for the probability of at least Two televisions, they are asking for the probability that the householder has two or more television or P(X>2). To calculate the probability we need to add the probability of each event in the range:

P(X>2) = P(2) + P(3) + P(4) + P(5) = 0.20 + 0.11 + 0.05 + 0.03 = 0.39

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Please help<br> Value of x<br> and what are angles m thank you!
Usimov [2.4K]

To find the value of x, you want to use the vertical angles theorem.

The vertical angles theorem says that all vertical angles (which is what TRY and QRW are) are congruent to each other. Knowing this you can make an equation where the angles are equal to each other to find the value of x.

TRY = QRW, so:

(x+16) = (4x-5)

1. Add 5 to both sides.

(x+21) = (4x)

2. You can get rid of the parentheses.

x+21 = 4x

3. Subtract x from both sides.

21 = 3x

4. Divide both sides by 3, isolating x.

7 = x

5. Flip this equation around, so:

x = 7

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To find the measure of TRY then plug x into the expression for TRY, which is (x+16).

TRY => ((7)+16) = 23

Since TRY is 23, the vertical angles theorem says that QRW is also 23. Add these measures up.

23+23 = 46

A line's measure is 180 degrees, so two lines would add up to 360 degrees. Subtract 46 from 360 to find the remaining degrees.

360-46 = 314

TRQ and YRW must be congruent to each other so that means you can divide 314 by 2.

314/2 = 157

xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

Answers are:

TRY = 23

TRQ = 157

5 0
4 years ago
What is the slope of a line perpendicular to y=2/3x-2 ?
Margarita [4]

Answer:

Step-by-step explanation:

y=2/3x-2

Negative reciprocal

y=-3/2x-2,

So the answer is -3/2

3 0
4 years ago
Plz help me outt ASAP
Scilla [17]

Answer:

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Step-by-step explanation:

7 0
4 years ago
A tennis ball is rolled off the edge of the roof of a building. Sean times how long it takes the ball to reach the ground and wr
harkovskaia [24]

Answer:

  4

Step-by-step explanation:

Solving for h(t) = 0, we find ...

  0 = -16t^2 +256

  0 = -t^2 +16 . . . . . . divide by 16

  t^2 = 16 . . . . . . . . . .add t^2

  t = 4 . . . . . . . . . . . . .positive square root

The ball hits the ground after 4 seconds.

5 0
3 years ago
from 1960 to 1970, the consumer price index increased from 29.6 to 38.8 if a dozen tangerines cost $0.31 in 1960 and the price o
Nitella [24]

The percent increase in the price index from 1960 to 1970 is:

% increase in price index = (38.8 – 29.6) * 100% / 29.6

% increase in price index = 31.08%

Therefore the price of a dozen tangerines in 1970 (X) is:

31.08 = (X - $0.31) * 100 / $0.31

<span>X = $0.41</span>

6 0
3 years ago
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