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Luba_88 [7]
3 years ago
8

Which statement about the two-way frequency table is true?

Mathematics
1 answer:
Tems11 [23]3 years ago
7 0

Answer:

Which statements?

Step-by-step explanation:

Can you write the statements please?

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Find the value x.<br> Need help....thank you
nikklg [1K]

Step-by-step explanation:

It is parallel to the third side and has a length equal to half the length of the third side.

so

x= 34/2= 17

x= 17

6 0
3 years ago
If 12% of x is equal to 6% of y, then 18% of x will be equal to how much percent of y ?​
Lelu [443]

Answer:

y=9%

Step-by-step explanation:

x=18%

y=9%

It is in a pattern like x=y+y

7 0
3 years ago
Read 2 more answers
4x+20 3x<br> determine the value of x
nlexa [21]

Step-by-step explanation:

4x + 20 = 3x \\ x =  - 20

<h2>-20 is the right answer.</h2>
5 0
3 years ago
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 <u>normal distribution and the central limit theorem</u>, 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 <u>mean and the standard error</u> 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 <u>p-value of Z when X = 0.68</u>, 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 is the solution to this equation?
kupik [55]

Answer:

x = 5

Step-by-step explanation:

3x - 7 + 4x = 28

Combine like terms

7x -7 = 28

Add 7 to each side

7x - 7 +7  = 28+7

7x = 35

Divide each side by 7

7x/7 = 35/7

x = 5

4 0
3 years ago
Read 2 more answers
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