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aleksklad [387]
3 years ago
5

A theater group holds a fund-raiser. It sells 100 raffle tickets for $7 apiece. Suppose you purchase four tickets. The prize is

two passes to a Broadway show, worth a total of $150.
Define the random variable X and Construct a PDF.
Mathematics
1 answer:
lys-0071 [83]3 years ago
4 0

Answer:

Check Explanation

Step-by-step explanation:

The random variable X is the possible net amount that leaves or enters one's hands. It is the amount of winnings!

X can take on value of -($7 × 4) = -$28

(That is, none of the four raffle tickets bought is picked to win)

X can also take on value of [$150 - ($7 × 4)] = $122

(That is, one of the four raffle tickets bought is picked to win)

For the probability distribution function, we find the probabilities of the different amount of winnings.

First of, probability of losing = (96/100) = 0.96

Then, probability of winning = (4/100) = 0.04

Probability density distribution is then given as

X | probability

-$28 | 0.96

$122 | 0.04

To go a step further, expected winnings would be

E(X) = Σ xᵢpᵢ = (-28)(0.96) + (122)(0.04)

= -26.88 + 4.88 = -$22

The expected winnings show that this is not a risk worth taking.

Hope this Helps!!!

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Pls help, i need help i dont understand
Svet_ta [14]

Answer:

I think it's 140 not sure

5 0
2 years ago
What is the area of a square with a 80 ft. Perimeter
slega [8]

Answer:

400 sq. ft.

Step-by-step explanation:

We gotta find the length of a side:

First, we divide 80 by 4, because the perimeter of a square is (4 x side):

80 ft. / 4 = 20  ft.

Second, we doing the normal area of a square equation:

20^{2} = 400 square ft.

Which leads to out answer of 400 sq. ft.

5 0
3 years ago
⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️HELP HELP HELP HELP ⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️
liq [111]

Answer: f(-x) = x^4 -3x^2 +x^6

-f(x) = -x^4 +3x^2 - x^6

Step-by-step explanation:

at f(-x), place a negative sign inside the function of x itself:

f(-x)= (-x)^4 -3(-x)^2 +(-x)^6

because the powers are even, they cancel out.

8 0
2 years ago
Help me please for the brainliest answer
AveGali [126]

Answer with Step-by-step explanation:

a) {n}^{2}  + 3 \\  \\ n = 1 \\  {1}^{2}  + 3 \\ 1 + 3 \\  = 4 \\  \\ n = 2 \\  {2}^{2}  + 3 \\ 4 + 3 \\  = 7 \\  \\ n = 3 \\  {3}^{2}  + 3 \\ 9 + 3 \\  = 12 \\  \\ n = 4 \\  {4}^{2}  + 3 \\ 16 + 3 \\  = 19 \\  \\ n = 10 \\  {10}^{2}  + 3 \\ 100 + 3  \\  = 103

In this sequence,

1st term = 4

2nd term = 7

3rd term = 12

4th term = 19

10th term = 103

b)2 {n}^{2}  \\  \\ n = 1 \\ 2 \times  {1}^{2}  \\ 2 \times 1 \\  = 2 \\  \\ n = 2 \\ 2 \times  {2}^{2}  \\ 2 \times 4 \\  = 8 \\  \\ n = 3 \\ 2 \times  {3}^{2}  \\ 2 \times 9 \\  = 18 \\  \\ n = 4 \\ 2 \times  {4}^{2}  \\ 2 \times 16 \\ =   32 \\  \\ n = 10 \\ 2 \times  {10}^{2}  \\ 2 \times 100 \\  = 200

in this sequence,

1st term = 2

2nd term =8

3rd term = 18

4th term =32

10th term = 200

4 0
3 years ago
PLZ HELP ASAP I RLLY NEED THE HELP
postnew [5]

Answer: just do 10.8×9×6 and divide the answer by two

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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