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Veseljchak [2.6K]

3 years ago

12

Miriam conducted 40 trials of her experiment. She got a sum of 5 seven times. What is the experimental probability of getting a

sum of 5 based on Miriam's experiment? Write your answer as a decimal. Do not round.

1 answer:

Sergio039 [100]3 years ago

6 0

Answer:

jisdfhifjeiojfdkoafsdjhfdhuodjnsdfkfnjikhdsiutjkhfnijsdknijfkhisjkndijkfnijsk

Step-by-step explanation:

fdsijfokfnkesnjvnjcjksdnjcvnjnnkncxv

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An insurance policy on an electrical device pays a benefit of 4000 if the device fails during the first year. The amount of the

lora16 [44]

Answer:

Expected benefit under this policy = $ 2694

Step-by-step explanation:

Given - An insurance policy on an electrical device pays a benefit of

4000 if the device fails during the first year. The amount of the

benefit decreases by 1000 each successive year until it reaches 0.

If the device has not failed by the beginning of any given year, the

probability of failure during that year is 0.4.

To find - What is the expected benefit under this policy ?

Proof -

Let us suppose that,

The benefit = y

Given that, the probability of failure during that year is 0.4

⇒Probability of non-failure = 1 - 0.4 = 0.6

Now,

If the device fail in second year , then

Probability = 0.6×0.4

If the device fail in third year, then

Probability = 0.6×0.6×0.4 = 0.6² × 0.4

Going on like this , we get

If the device is failed in n year, then

Probability = 0.6ⁿ⁻¹ × 0.4

Now,

The probability distribution is-

Benefit , x 4000 3000 2000 1000 0

P(x) 0.4 0.6×0.4 0.6² × 0.4 0.6³ × 0.4 1 - 0.8704

(0.4) (0.24) (0.144) (0.0864) (0.1296)

At last year, the probability = 1 - (0.4+ 0.24+ 0.144+ 0.0864) = 1 - 0.8704

Now,

We know that,

Expected value ,

E(x) = ∑x p(x)

= 4000(0.4) + 3000(0.24) + 2000(0.144) + 1000(0.0864) + 0(0.1296)

= 1600 + 720 + 288 + 86.4 + 0

= 2694.4

⇒E(x) = 2694.4 ≈ 2694

∴ we get

Expected benefit under this policy = $ 2694

5 0

2 years ago

Please help ASAP!!!!!!!!!!!

Effectus [21]

Answer:

x = 3.76 ft

Step-by-step explanation:

To find the missing side, "x", solve using proportions.

In similar polygons, the 'new' polygon was created by multiplying every side of the 'old' polygon by the same number. Every side was multiply by the <u>scale factor</u>, "k", which tells you how much a polygon grew (k>1) or shrunk (0<k<1).

Therefore, if you divided the pairs of corresponding sides, they would be equal.

From the diagram, you can tell that the following sides correspond:

CB ~ GF

AB ~ EF

<u>Use the proportion</u>

$\frac{EF}{AB} = \frac{GF}{CB}$

$\frac{x}{6ft} = \frac{3.3ft}{5ft}$ Substitute values from diagram

$6ft*\frac{x}{6ft} = 6ft*\frac{3.3ft}{5ft}$ Multiply both sides by 6 ft

$x = \frac{6ft*3.3ft}{5ft}$ "x" is isolated. Multiply fraction by combining into numerator

$x = \frac{19.8ft}{5ft}$ Solved numerator. Divide for decimal answer.

$x = 3.76ft$

The value of 'x' is 3.76 ft.

4 0

2 years ago

HELPPP FAST LIKE 4 minutes left

Levart [38]

Answer: A. 40

Step-by-step explanation:

3 0

2 years ago

Malik’s solution to the equation 2/5x-4y=10 , when x=60, is shown below.

zhenek [66]

Answer:

D. Malik substituted 60 for y instead of x.

Step-by-step explanation:

Look closely at the step by step process.

4 0

3 years ago

Read 2 more answers

Noah said, “When you divide a number by a second number, the result will always be smaller than the first number.”

marshall27 [118]

Answer:

When dividing two fractions by each other, the result will be larger. Dividing two whole numbers, however, will always result in a smaller number because you're taking away a part of the number.

Step-by-step explanation:

8 0

2 years ago