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3 years ago

I’ll gift u a milf if you answer

Mathematics

1 answer:

Sveta_85 [38]3 years ago

8 0

Answer:

$x = - \frac{11}{2}$

divide each term by two and simplify.

Give me my milf.

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4. Amazon executives believe that at least 70% of customers would return a product 2 days after it arrives at their home. A samp

inysia [295]

Using the normal distribution and the central limit theorem, it is found that there is a 0.1635 = 16.35% probability of a sample result with 68% or fewer returns prior to the third day.

In a normal distribution with mean $\mu$ and standard deviation $\sigma$ , the z-score of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

It measures how many standard deviations the measure is from the mean.
After finding the z-score, we look at the z-score table and find the p-value associated with this z-score, which is the percentile of X.
By the Central Limit Theorem, for a proportion p in a sample of size n, the sampling distribution of sample proportions has mean $\mu = p$ and standard error $s = \sqrt{\frac{p(1 - p)}{n}}$

In this problem:

Sample of 500 customers, hence $n = 500$ .

Amazon believes that the proportion is of 70%, hence $p = 0.7$

The mean and the standard error are given by:

$\mu = p = 0.7$

$s = \sqrt{\frac{p(1 - p)}{n}} = \sqrt{\frac{0.7(0.3)}{500}} = 0.0205$

The probability is the p-value of Z when X = 0.68, hence:

$Z = \frac{X - \mu}{\sigma}$

By the Central Limit Theorem

$Z = \frac{X - \mu}{s}$

$Z = \frac{0.68 - 0.7}{0.0205}$

$Z = -0.98$

$Z = -0.98$ has a p-value of 0.1635.

0.1635 = 16.35% probability of a sample result with 68% or fewer returns prior to the third day.

A similar problem is given at brainly.com/question/25735688

7 0

2 years ago

What are the prime factors of 34725346753856734573457812356273452743654376547654783674337864537644?

NeTakaya

Answer:

3475347396

Step-by-step explanation:

yep

7 0

3 years ago

A pool can be filled bye one pipe in 10 hours and by a second pipe in 15 hours. How long will it take using both pipes to fill t

forsale [732]

Answer:

it will take 25 hours

Step-by-step explanation: add 10 and 15

4 0

3 years ago

How can found thw length of arectngle

Minchanka [31]

If you have the area of the rectangle, then the equation would be A = W*L

Lets say the area is 15 and the width is 3. You don't know what the length is. Just divide 3 into 15 to get 5. Hope this helps!

5 0

3 years ago

Jake, Lionel, and Wayne work as house painters for Paint Well Company. Jake can paint 1 room in t hours. Lionel can paint a room

34kurt

Hours to paint one room
Jake: t hours 
Lionel: t-2 hours 
Wayne: (1.5)(t-2) hours 

Now who is Donald? 

Shall we assume that by "Donald" you meant "Wayne"? 

If t is 6 hours, then the hours to paint one room is 
Jake: 6 hours 
Lionel: 4 hours 
Wayne: 6 hours 
This means that in one hour: 
Jake can paint 1/6 of a room, 
Lionel can paint 1/4 of a room, 
Wayne can paint 1/6 of a room. 
Added together, the three of them can paint (1/6 + 1/4 + 1/6) = 7/12 of a room in one hour.

7 0

3 years ago