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vfiekz [6]
3 years ago
9

The following information was collected from a simple random sample of a population. 16 19 18 17 20 18. The point estimate of th

e population standard deviation isa. 2.000b. 1.291c. 1.414d. 1.667
Mathematics
1 answer:
Kruka [31]3 years ago
8 0

Answer:( c ) 1.414

Step-by-step explanation:

Let m be mean

M=mean=sum/n

M= (16+19+18+17+20+18) / 6

M=108/6

M=18

Let start finding:

The standard deviation formula is= sqrt( Summation of |x-m|^2 / n-1)

|x-m|^2

For 1st: |16-18|^2=4

For 2nd: |19-18|^2=1

For 3rd: |18-18|^2=0

For 4th: |17-18|^2=1

For 5th: |20-18|^2=4

For 6th: |18-18|^2=0

Summation of |x-m|^2 =10

The standard deviation formula is :

S.D = sqrt( Summation of |x-m|^2 / n-1)

S.D= sqrt(10 / 5)

S.D=sqrt(2)

S.D= 1.414

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Diano4ka-milaya [45]
Area= 1/2(base)(height)
A= 1/2(7)(2)
A= (1*2*7)/2
A= 14/2
A= 7 units squared

Hope this helps! :)
3 0
3 years ago
On a spelling test, Marcy got 15% of the questions incorrect. If there were 40 questions on the spelling test, than how many que
marissa [1.9K]

Answer:

34

Step-by-step explanation:

Marcy got 15% of the 40 wrong

.15 *40

6

If she got 6 wrong, then she got the rest right

40-6 = 34

She got 34 right

4 0
3 years ago
Kit and Kat are building a kite for the big kite festival. Kit has already
Lunna [17]

Kat should tell Kim that It's too late to change the area of this kite because the length of the diagonals of a kite determines its area.

<h3>How to calculate the area of a kite?</h3>

In Mathematics, the area of a kite is equal to one-half the product of the length of its diagonals. Mathematically, the area of a kite can be calculated by using this formula:

A = ½ × d₁ × d₂

<u>Where:</u>

  • A is the area of a kite.
  • d₁ and d₂ are the length of the diagonals of a kite.

Since Kit has already cut his sticks for the diagonals, Kat should tell him that it's too late to change the area of this kite because the length of the diagonals of a kite determines its area.

Read more on area of a kite here: brainly.com/question/9593985

#SPJ1

8 0
2 years ago
The graph of the function f(x)=10/x+2 is shown below. What is the vertical asymptote of the function? x = –10 x = –2 x = 0 x = 2
White raven [17]
Red line.
Answer: x = -2

f(x)=\dfrac{10}{x+2}\\\\x+2\neq0\to x\neq-2
Therefore, the vertical asymptote of function f(x) is x = -2.

4 0
3 years ago
Read 2 more answers
Please help me<br> What is the solution to inequality? −6x+5&gt;−1
nignag [31]

Answer:

x < 1.

Step-by-step explanation:

-6x + 5 > -1

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-6x > -6

x <  1 (answer).

Note that the inequality sign flips when we divide by a negative.

6 0
3 years ago
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