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Yanka [14]
2 years ago
7

What's a integer numbers​

Mathematics
1 answer:
Vlad [161]2 years ago
8 0

Answer:

Step-by-step explanation:

The set of integers consists of zero ( ), the positive natural numbers ( , , , …), also called whole numbers or counting numbers , and their additive inverses (the negative integers , i.e., −1, −2, −3, …). The set of integers is often denoted by a boldface Z ( ) or blackboard bold mathbb (Unicode U+2124 ℤ) standing for the German word Zahlen ( , numbers ).

-Hope this helps

-GoldenWolfX

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An urn contains a very large number of marbles of four different colors: red, orange, yellow, and green. A sample of 12 marbles d
Umnica [9.8K]

Answer:

We  can reject the hypothesis at the 0.05 significance level.

 

Step-by-step explanation:

given that an urn contains  a very large number of marbles of four different colors: red, orange, yellow, and green. A sample of 12 marbles drawn at random from the urn revealed 2 red, 5 orange, 4 yellow, and 1 green marble.

H0: All colours are equally likely

Ha: atleast two colours are not equally likely

(Two tailed chi square test at 5% significance level)

color                  Red           Orange      Yellow      Green         total

Observed  O         2                     5                  4           1              12    

Expected   E         3                     3                   3          3              12

(O-E)^2/E             0.3333            5.3333        0.3333  5.3333     11.3333

chi square = 11.3333

df =3

p value = 0.010055

Since p < 0.05 we reject H0

We  can reject the hypothesis at the 0.05 significance level.

 

3 0
2 years ago
List all of the quadrilaterals with exactly one pair of parallel sides.
Leno4ka [110]

your answer is A because its the parallelogram 

8 0
3 years ago
A car dealership paid $9,000 for a car. The sticker price is $10,395 for a customer to buy the car. a. What’s the markup in doll
Sladkaya [172]

Answer:

1) To determine how much the change of $9,000 to $10,395, we must subtract 9,000 from 10,395;

10,395 - 9,000 = $1,395 is the change in <u>price</u> (an increase).

Formula to find percentage of change;

Change in price/original amount x 100% (100/100)

Replace those values:

1,935 (change in price/increase)       100

_____                      x                        _____ =<u> </u><u>%0.215</u>

9,000(original amount)                      100

7 0
2 years ago
Graph each system and determine the number of solutions it has. If it has one solution, name it.
Naya [18.7K]

I have the picture here:

  1. One Solution (-1,-2)
  2. One Solution (2,-3)
  3. One Solution (1/2,2)
  4. One Solution (1,4)
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Hope this helps!

5 0
3 years ago
Francis analyzes the given data sets.
Anit [1.1K]

Answer:

2. The IQR for Data Set A is larger than the IQR for Data Set B.

4. The IQR for Data Set A and Data Set B measures the middle 50% of the data.

Step-by-step explanation:

IQR is an abbreviated form of the word Interquartile range. It is used as a measure in statistics for a set of given data.

Interquartile range can be defined as the 50th percentile (50%) of a set of data. It is the difference between the upper limit and lower limit of a given set of data.

Interquartile range can also be referred to or known as the Median(middle) of a given set of data.

Interquartile range is determined by arrange the given set of data from the lowest to height number and then we find or pick the number that is in the middle as our Interquartile range. If the number of term of a given set of data is even in number, we pick two numbers in the middle, add them together and divide it by 2.

In the question above, the correct statements that Francis can make about a given set of data is :

2. "The IQR for Data Set A is larger than the IQR for Data Set B" and

4. The IQR for Data Set A and Data Set B measures the middle 50% of the data.

This is because

Data Set A: 20, 25, 28, 30, 39, 40

Since the number of terms in data set A is 6 (i.e an even number) hence, we pick the two numbers in the middle

The Interquartile range for Data Set A= (28+30) ÷ 2 = 58÷ 2 = 29

For Data Set B: 20, 22, 23, 27, 30, 42

The number of terms in data set is 6( i.e an even number), likewise we pick the two numbers in the middle

The Interquartile range for Data Set B

= (23+27) ÷ 2 = 50÷ 2 = 25

From the above calculation, we have proved that option 2 is correct. The Interquartile range of Data Set A which is 29 is larger than the Interquartile range of Data Set B which is 25.

Likewise Option 4 is correct as well , because the Interquartile range of both Data set A and Data set B measured the middle 50% of the data.

5 0
3 years ago
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