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goldfiish
6 days ago
11

Juan runs a company that makes pens. He notices that 1 out of every 9 pens are faulty. He uses a standard deck of cards to model

the situation, with all the 10s representing faulty pens. Which statement about his model is true?
His model cannot be improved.


His model can be improved the most by removing all face cards from the deck.


His model can be improved the most by removing all the face cards and aces from the deck.
Mathematics
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Radio blackouts are among the most common space weather events to affect Earth. Minor radio blackouts occur, on average, twice p
Zina [12379]

Answer:

a.  P(x = 3) = 0.061313

b. The anticipated number of radio blackouts = 4

c.  It's unclear when the next radio blackout will occur.

d. P(x = 4) = 0.19537

Step-by-step explanation:

Based on the provided details:

A Poisson process is utilized to model the occurrence of this event:

Minor radio blackouts occur, on average, two times annually.

Therefore:

\lambda = 2 \ years

For question (a)

time t = 1/2 (i.e., six months)

Let x represent the likelihood of 3 incidents during the remaining months of the year.

Then:

P(x = 3) = \dfrac{e^{-\lambda t} \times (\lambda t)^x}{x!}

P(x = 3) = \dfrac{e^{-2* 0.5} \times (2 * 0.5)^3}{3!}

P(x = 3) = 0.061313

b).

The expected number of radio blackouts over two years is calculated as follows:

We start with:

t = 2 years

E(x) = λ × t

E(x) = 2 × 2

E(x) = 4

Thus, the predicted number of radio blackouts = 4

c).

The time we must wait until the probability of witnessing the next radio blackout reaches at least 0.5 is as follows:

In this case, time (t) =???

Thus:

P(x =1) = 0.5

P(x = 1) = \dfrac{e^{-\lambda t} \times (\lambda t)^x}{x!} = 0.5

\dfrac{e^{-\lambda t} \times (\lambda t)^x}{x!} = 0.5

Consequently, we are unable to ascertain the probability (50%) of the next radio blackout.

d)

We can compute the probability that the time until the fourth blackout is at most 2 years as follows:

Here;

x =4, t = 2

Thus:

P(x = 4) = \dfrac{e^{-4 } \times (4)^4}{4!}

P(x = 4) = 0.19537

8 0
2 months ago
Nate has $50 to spend at the grocery store. he fills his shopping cart with items totaling $46 at checkout he willhave to pay 6%
zzz [12365]

Answer:

Yes

Step-by-step explanation:

This is because 46 multiplied by 1.06 equals 48.76, which is under $50.

4 0
2 months ago
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Four hot air balloons each descend 295 feet per minute for 7 minutes. Find the total change in altitude for all 4 balloon
Svet_ta [12734]

Answer: A total descent of 8260 feet occurred for all four balloons.

Step-by-step explanation:

Based on the information provided:

Number of hot air balloons = 4

Minutes of descent = 7

Descent rate per minute = 295 feet

Thus, the overall change in altitude for all four balloons can be calculated as:

295\times 7\times 4\\\\=8260\ feet

Thus, a total descent of 8260 feet was experienced by the four balloons.

7 0
2 months ago
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