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2 years ago

Plz help meh with this Q.Q

Mathematics

1 answer:

ZanzabumX [31]2 years ago

5 0

Answer:

What are you asking for?

Step-by-step explanation:

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Which word best describes the degree of overlap between the two data sets?

RUDIKE [14]

The answer is low and if not then Moderate sorry if it’s wrong

3 0

2 years ago

There are three executives in an office, ages 56, 57, and 58. If a 57-year-old executive enters the room, the

vova2212 [387]

Answer:

option (c) The mean age will stay the same but the variance will decrease

Step-by-step explanation:

Case I: For 3 executives of ages 56, 57 and 58

Number of executives, n = 3

Mean = $\frac{\textup{56 + 57 + 58 }}{\textup{3}}$

Mean = 57

Variance = $\frac{\sum{(Data - Mean)^2}}{\textup{n-1}}$

Variance = $\frac{(56 - 57)^2+(57-57)^2+(58-57)^2}{\textup{3-1}}$

Variance = $\frac{1+0+1}{\textup{2}}$

Variance = 1

For Case II: For 4 executives of ages 56, 57, 58 and 57

Number of executives, n = 4

Mean = $\frac{\textup{56 + 57 + 58 + 57 }}{\textup{4}}$

Mean = 57

Variance = $\frac{\sum{(Data - Mean)^2}}{\textup{n-1}}$

Variance = $\frac{(56 - 57)^2+(57-57)^2+(58-57)^2+(57-57)^2}{\textup{4-1}}$

Variance = $\frac{1+0+1+0}{\textup{3}}$

Variance = 0.67

Hence,

Mean will remain the same and the variance will decrease

Hence,

The correct answer is option (c) The mean age will stay the same but the variance will decrease

3 0

2 years ago

What number is 25% of 540

dybincka [34]

25%of 540
25/100 ×540
135

6 0

2 years ago

Read 2 more answers

I dont know how to do geometry like that and i need help on my assignment

bearhunter [10]

Answer:

Step-by-step explanation: Can you ask your teacher? Or no?

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2 years ago

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For a moving object, the force is acting on the object varies directly with the object’s acceleration. When a force of 9 N acts

svetlana [45]

Answer:

12 Newtons

Step-by-step explanation:

We can use Newton’s Second Law to find the mass first.

F = ma

9 = 3m

mass = 3

Substitute this into the second equation.

F = ma

F = 3(4)

F = 12N

Hope this helps! :D

8 0

2 years ago