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Taya2010 [7]
3 years ago
6

Round each number to the nearest thousand. Which is the best estimate for the sum of 472,378+178,261?

Mathematics
1 answer:
AlladinOne [14]3 years ago
6 0
The answer will be a.650,000.
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For the following paired data, (1) Calculate the correlation coefficient, r, and (2) at the 0.05 significance level, determine w
expeople1 [14]

Answer:

Linear correlation exists

Step-by-step explanation:

Given the data :

X : | 2 4 5 6

Y : | 6 9 8 10

Using technology to fit the data and obtain the correlation Coefficient of the regression model,

The Correlation Coefficient, r is 0.886

To test if there exists a linear correlation :

Test statistic :

T = r / √(1 - r²) / (n - 2)

n = number of observations

T = 0.886 / √(1 - 0.886²) / (4 - 2)

T = 0.866 / 0.3535845

T = 2.449

Comparing Pvalue with α

If Pvalue < α ; Reject H0

Pvalue = 0.1143

α = 0.05

Pvalue > α ; We reject the null and conclude that linear correlation exists

7 0
3 years ago
What is 50/8 in simplest form ??
Maru [420]
50/8 can be simplified by dividing top and bottom by 2, getting 25/4. this is also equal to 6 and 1/4
4 0
3 years ago
Evaluate the expression when y = 2.
Yuki888 [10]

Answer:

Hiiiii

The answer is 4 + 2 + 7= 13

Sorry if it incorrect

Have a nice day

6 0
2 years ago
Read 2 more answers
Evaluate the integral. ∫50∫25−x2√−25−x2√∫25−x2−z2√−25−x2−z2√1(x2+y2+z2)1/2dydzdx∫05∫−25−x225−x2∫−25−x2−z225−x2−z21(x2+y2+z2)1/2d
Kipish [7]
Is that a valid question?
4 0
3 years ago
Which relation is a function? {(0, 2), (0, 4), (0, 6), (0, 8)} {(1, 2), (2, 3), (3, 4), (4, 5)} {(1, 2), (2, 1), (1, 3), (3, 1)}
o-na [289]

Answer:

{(1,2),(2,3),(3,4),(4,5)}

Step-by-step explanation:

A function is any relationship which takes one element of one set and assigns to it one and only one element of the second set.

From the above definition, the relation {(0,2),(0,4),(0,6),(0,8)} is not a function. 0 gives different values, if x=0, it gives 2 or 4 or 6 or 8. It is one-to-many relation

The relation {(1,2),(2,1),(1,3),(3,1)} is not a function, 1 is assigned to 2 or 3.

If x=1,it gives 2 or 3

The relation {(1,2),(3,4),(5,6),(1,8)} is not a function. It is a one - to - many relation. If x=1, it gives 2 or 8

The relation {(1,2),(2,3),(3,4),(4,5)} is a one - to- one relation and it is a function. One and only one value is assigned to only one value of the  second set. It is like the function f(x)= x+1

                    If x=1, f(x)=2

                    If x=2, f(x)=3

                    If x=3, f(x)=4

                    If x=4, f(x)=5

8 0
2 years ago
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