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Ivan
3 years ago
7

Which statement is true ?

Mathematics
2 answers:
Lapatulllka [165]3 years ago
5 0
The product of two negative numbers is positive is your answer
Rus_ich [418]3 years ago
4 0
It is important to first understand the vocab they are using. You might already know these words, but I will write the basic definitions just to make sure. 

Quotient- a number that you get for an answer in a division problem.
Product- a number that you get for an answer in a multiplication problem.

Knowing this, which of the following statements is true?
1. The quotient of two negative numbers is negative. - FALSE ( For example, (-2/-1)=(1) ) a positive number one is our quotient.

2. The product of two negative numbers is positive. - TRUE ( the double negative creates a positive. For example, (-2×-3)= 6. The product "6" is positive.)

3. The quotient of a positive number and a negative number is positive. - FALSE ( Ex: (-1÷ 2)= (- \frac{1}{2}) The negative one half is our quotient and it is not positive.

4. The product of two numbers positive numbers is negative. - FALSE you need at a negative number that you in the multiplication in order to get a negative product.


Rule of thumb:

If you have an even amount of negative numbers present in a division or multiplication problem, the negatives will cancel each other out and create a positive outcome(quotient/product). 

If you have no negative numbers at all in a multiplication or division problem you will have a positive outcome. 

If you have an odd number of negative numbers, the outcome will be negative in an multiplication or division problem. 

Please comment below with any further questions you still have! 


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Assume that all conditions are met. The mean of the differences was 1. 33 and the standard deviation of those differences was 2.
Maurinko [17]

The test statistic for this procedure is using two sample T-test is 0.458.

Definition of Two Sample T-test

A variation of the Student's t-test used to determine if two sample means are substantially different is known as the two sample T-test (also known as Welch's t-test, Welch's adjusted T, or unequal variances t-test). The test's degrees of freedom have been changed, which generally boosts the test's power for samples with unequal variance.

T-Test Statistic for The Procedure

It is given that mean of the differences = 1.33

And, the standard deviation of the differences, standard error = 2.90

The test static formula is given as,

t = (estimate - hypothized value) / standard error

Here,  t is the t- test statistic, and estimate is the mean of the differences.

Since it is given that all conditions are met, the hypothized value can be taken as 0

Substituting substituting estimate = 1.33 and standard error = 2.90 in the t-test statistic formula, we get,

t = (1.33-0)/2.90

or t = 0.458

learn more about t-test here:

brainly.com/question/14128303

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2 years ago
Charlie estimates his dog weighs 17 lbs. When Charlie weighed his dog, he weighed 20 lbs. What is the percent error of the weigh
amm1812

Answer:

The 15% error  

Step-by-step explanation:

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Umnica [9.8K]
I don't think those two expressions would even be equal unless w = 0. You can't just add in a 2 from nowhere.
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