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3 years ago

When figuring the pooled population variance estimate in a t test for independent means?

1 answer:

4 0

The appropriate response is a weighted average. It is a mean ascertained by giving qualities in an informational index more impact as indicated by some characteristic of the information. It is normal in which every amount to have arrived at the midpoint of is allocated a weight, and these weightings decide the relative significance of every amount on the normal.

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The degree of the expression 4x^5y^mz is 10. What is the value of m?

geniusboy [140]

The correct answer is 4 :-)

4 0

3 years ago

Read 2 more answers

The coordinates of LMN are L (4,5), M (5,-2), and N (0,0). If the triangle is rotated 270° about point N, what are the coordinat

tester [92]

Answer: (-2,-5)

Step-by-step explanation:

The rotation rule for rotating a figure about $270^{\circ}$ is given by :-

$(x,y)\to (y,-x)$ , where (x,y) is the coordinates for pre-image and (y,-x) is the coordinates for image. (1)

Given : The coordinates of LMN are L (4,5), M (5,-2), and N (0,0).

If the triangle is rotated 270° about point N

Then, the coordinates of M , will be :

$(5,-2)\to (-2,-5)$ (Using the rule described in (1))

Hence, the coordinates of M after rotated 270° about point N=(-2,-5).

8 0

3 years ago

Which of the following is a description of the data with a correlation coefficient of -0.3?

STALIN [3.7K]

The number is near zero, so it is classified as "low." Its sign is negative, so it is a ...
-low negative correlation

6 0

3 years ago

Read 2 more answers

Karl wants to rent a bike for at most $55. He can rent a bike for $7 per hour plus a $9.50 flat fee. Any portion of an hour is c

Papessa [141]

Answer 6 hours
Reason
7x + 9.50 = 55
-9.50. -9.50 subtract from both sides
_____________
7x = 45.50

Divide both sides by 7 to isolate x
X = 6.5
So he can rent for 6 hours (the .5 would be charged as a full hour per the problem)

5 0

1 year ago

Write the slope-intercept form of the question of the line through the given point with the given slope.

Alexxx [7]

Answer:

y=x

Step-by-step explanation:

Slope intercept form of a line

y = mx+b

m is the slope

y = 1x+b

Substitute in the point

1 = 1*1+b

1 = 1+b

Subtract 1 from each side

1-1 =1-1+b

0=b

y = 1x

y=x

8 0

3 years ago