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larisa86
10 days ago
10

Suppose a shipment of 400 components contains 68 defective and 332 non-defective computer components . From the shipment you tak

e a random sample of 25. When sampling with replacement (so that the p = probability of success does not change), note that a success in this case is selecting a defective part. The standard deviation of this situation is?
Mathematics
1 answer:
Leona [4.1K]10 days ago
6 0

Answer:

The calculated standard deviation for the defective components in this sample is 1.88.

Step-by-step explanation:

The sampling is conducted with replacement, indicating that each trial is independent, allowing the use of the binomial probability distribution for this question.

Binomial probability distribution

This calculates the probability of achieving exactly x successes over n independent trials, with p being the success probability.

The expected value for the binomial distribution can be expressed as:

E(X) = np

The standard deviation for the binomial distribution is given by:

\sqrt{V(X)} = \sqrt{np(1-p)}

68 defective parts out of 400:

This indicates that p = \frac{68}{400} = 0.17

From the total shipment, you select a random sample of 25.

<pThis implies that n = 25

Calculating the standard deviation for defective parts in the sample:

\sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{25*0.17*0.83} = 1.88

The standard deviation for the defective parts in the sample is 1.88.

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Answer:

b. 0.86, 0.87

Step-by-step explanation:

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4 0
8 days ago
A bag holds 12 red marbles, 11 green marbles, 17 blue marbles, and 5 yellow marbles. What is the probability that you will not c
Zina [3914]

¡Hola! Bienvenido a!

Vamos a sumar cuántas canicas tenemos en total.

12+11+17+5=45

Queremos hallar la probabilidad de elegir una canica que no sea azul. Observemos cuántas canicas no son azules.

12+11+5=28

Tendremos esta probabilidad sobre 48.

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¡Espero que esto ayude!

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3 days ago
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Choose the correct item from each drop-down menu to factor the trinomial 6y2 + 19y + 15 by grouping.
AnnZ [3877]

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Step-by-step explanation: 6y2 - 10y - 9y - 15

2.1 Factoring 6y2-19y+15

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4 days ago
Sanjit drives the 45 km distance between York and Leeds he then drives a further 42 km from Leeds to Blackpool
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The average speed for his entire journey from York to Blackpool is about 61.41 km/h.

Here’s a breakdown of how we arrive at this:

\text{ The average speed}=\frac{\text{Total distance covered}}{\text{Total time taken}}

The distance he travelled from York to Leeds is 45 km,

and the speed during that section was 54 km/h.

Therefore, the time taken to travel from York to Leeds is 45/54 hours (since Time = Distance/Speed).

Next, the distance from Leeds to Blackpool is 42 km,

and the time for that leg of the journey is 35 minutes, which is 35/60 hours.

This leads to the total duration for his trip as

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The cumulative distance covered equals 45 + 42 = 87 km.

Thus, his average speed is calculated as:

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3 0
4 days ago
Read 2 more answers
the graph shows your budget and the total cost of x gallons of gasoline and a car wash you want to determine the possible amount
lawyer [4008]

Answer:

Part a) Your budget is $40.

Part b) The price for one gallon of gasoline is $3.55, while a car wash costs $8.

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Part d) Refer to the explanation below.

Step-by-step explanation:

Please see the complete question in the attached image.

Part a) The budget is expressed by the equation

y = 40

therefore,

Your budget amounts to $40.

Part b) In terms of costs, how much is a gallon of gasoline and what is the car wash price?

Let

y ------> denote the total cost for a gallon of gasoline along with a car wash

x -----> define the volume of gasoline in gallons

We can express the relationship as

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Part c) Formulate an inequality representing the potential quantity of gasoline you can purchase:

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3.55x+8 \leq 40

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3.55x \leq 40-8

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Part d) Utilize the graph to determine the solution of the inequality from part c)

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y = 40

y = 3.55x + 8

The solution lies at the intersection of both graphs. By observing the graph, the intersection appears to be around (9, 40).

This indicates that the maximum volume of gasoline purchasable within your budget is approximately 9 gallons.

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4 days ago
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