To write:

The two other true proportions for$\frac{21}{27}=\frac{7}{9}$ .

The two other true proportions for

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2021-08-15
Answered

To write:

The two other true proportions for$\frac{21}{27}=\frac{7}{9}$ .

The two other true proportions for

You can still ask an expert for help

un4t5o4v

Answered 2021-08-16
Author has **105** answers

Approach:

A proportion is true, if its ratios are equal. As ratios are fractions, one way to determine whether the given proportion is true or false by writting both the ratios in simplest form. Another way is by comparing their cross product.

If the cross product are equal, then the proportion is said to be true. If cross product are not equal, then the proportion is false.

Calculation:

If two ratios are equal in a proportion, then it is called a true proportion.

If it is a true proportion, their cross product are equal.

$\frac{21}{27}=\frac{7}{9}$

$21\times 9=27\times 7$

Therefore, the two other true proportions will be

$\frac{21}{7}=\frac{27}{9}$ and $\frac{27}{21}=\frac{9}{7}$

Final statement:

The two other true proportion are$\frac{21}{7}=\frac{27}{9}$ and $\frac{27}{21}=\frac{9}{7}$

A proportion is true, if its ratios are equal. As ratios are fractions, one way to determine whether the given proportion is true or false by writting both the ratios in simplest form. Another way is by comparing their cross product.

If the cross product are equal, then the proportion is said to be true. If cross product are not equal, then the proportion is false.

Calculation:

If two ratios are equal in a proportion, then it is called a true proportion.

If it is a true proportion, their cross product are equal.

Therefore, the two other true proportions will be

Final statement:

The two other true proportion are

Jeffrey Jordon

Answered 2021-12-17
Author has **2027** answers

Answer is given below (on video)

asked 2021-05-14

Consider the accompanying data on flexural strength (MPa) for concrete beams of a certain type.

$\begin{array}{|ccccccc|}\hline 11.8& 7.7& 6.5& 6.8& 9.7& 6.8& 7.3\\ 7.9& 9.7& 8.7& 8.1& 8.5& 6.3& 7.0\\ 7.3& 7.4& 5.3& 9.0& 8.1& 11.3& 6.3\\ 7.2& 7.7& 7.8& 11.6& 10.7& 7.0\\ \hline\end{array}$

a) Calculate a point estimate of the mean value of strength for the conceptual population of all beams manufactured in this fashion.$[Hint.\text{}?{x}_{j}=219.5.]$ (Round your answer to three decimal places.)

MPa

State which estimator you used.

$x$

$p?$

$\frac{s}{x}$

$s$

$\stackrel{~}{\chi}$

b) Calculate a point estimate of the strength value that separates the weakest$50\mathrm{\%}$ of all such beams from the strongest $50\mathrm{\%}$ .

MPa

State which estimator you used.

$s$

$x$

$p?$

$\stackrel{~}{\chi}$

$\frac{s}{x}$

c) Calculate a point estimate of the population standard deviation ?.$[Hint:\text{}?{x}_{i}2=1859.53.]$ (Round your answer to three decimal places.)

MPa

Interpret this point estimate.

This estimate describes the linearity of the data.

This estimate describes the bias of the data.

This estimate describes the spread of the data.

This estimate describes the center of the data.

Which estimator did you use?

$\stackrel{~}{\chi}$

$x$

$s$

$\frac{s}{x}$

$p?$

d) Calculate a point estimate of the proportion of all such beams whose flexural strength exceeds 10 MPa. [Hint: Think of an observation as a "success" if it exceeds 10.] (Round your answer to three decimal places.)

e) Calculate a point estimate of the population coefficient of variation$\frac{?}{?}$ . (Round your answer to four decimal places.)

State which estimator you used.

$p?$

$\stackrel{~}{\chi}$

$s$

$\frac{s}{x}$

$x$

a) Calculate a point estimate of the mean value of strength for the conceptual population of all beams manufactured in this fashion.

MPa

State which estimator you used.

b) Calculate a point estimate of the strength value that separates the weakest

MPa

State which estimator you used.

c) Calculate a point estimate of the population standard deviation ?.

MPa

Interpret this point estimate.

This estimate describes the linearity of the data.

This estimate describes the bias of the data.

This estimate describes the spread of the data.

This estimate describes the center of the data.

Which estimator did you use?

d) Calculate a point estimate of the proportion of all such beams whose flexural strength exceeds 10 MPa. [Hint: Think of an observation as a "success" if it exceeds 10.] (Round your answer to three decimal places.)

e) Calculate a point estimate of the population coefficient of variation

State which estimator you used.

asked 2021-12-16

The solution of the proportion $\frac{r}{8}=\frac{25}{40}$

asked 2021-08-12

You can use a scatterplot to estimate a value between two known values. Estimate the world production of oil when the United States produced 12% of the worlds

asked 2022-01-21

Three apples cost 37 cents. What would be the price of $1\frac{3}{4}$ dozen apples

A. 444 cents

B. 148 cents

C. 259 cents

D. 297 cents

A. 444 cents

B. 148 cents

C. 259 cents

D. 297 cents

asked 2021-05-07

Suppose that A and B are independent events such that $P(A)=0.10$ and $P(\overline{B})=0.20$

Find$P(A\cap B)$ and $P(A\cup B)$

Find

asked 2021-12-19

Write 1/20 as a percent.

asked 2021-08-10

To calculate: The time it will take by both the pumps to complete the job if they work together.

Given information: One pump takes 24 minutes by itself to fill the pool and other one take 56 minutes by itself to fill the pool.

Given information: One pump takes 24 minutes by itself to fill the pool and other one take 56 minutes by itself to fill the pool.