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3 years ago

Hey guys can someone help me with this you will earn 15 points plz it is for Tomorrow

Mathematics

2 answers:

Lisa [10]3 years ago

6 0

Answer:

1. 7.4%

2. 3/10

3. 0.42

4. Not Sure

5. 212.8

6. 2,900

VashaNatasha [74]3 years ago

3 0

Answer:

1. i think is b

2. i think is a

3. i think is "a" as well

4. i think a

5. definatley b

6. i think "c" sorry if i am wrong

Step-by-step explanation:

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How much money does the average professional hockey fan spend on food at a single hockey game? That question was posed to 10 ra

Vinil7 [7]

Answer:

Now we have everything in order to replace into formula (1):

$18-2.262\frac{2.75}{\sqrt{10}}=16.03$

$18+2.262\frac{2.75}{\sqrt{10}}=19.97$

Step-by-step explanation:

Information given

$\bar X=18$ represent the sample mean

$\mu$ population mean (variable of interest)

s=2.75 represent the sample standard deviation

n=10 represent the sample size

Confidence interval

The confidence interval for the mean is given by the following formula:

$\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}$ (1)

The degrees of freedom are given by:

$df=n-1=10-1=9$

The Confidence is 0.90 or 90%, the significance is $\alpha=0.1$ and $\alpha/2 =0.05$ , and the critical vaue would be $t_{\alpha/2}=2.262$

Now we have everything in order to replace into formula (1):

$18-2.262\frac{2.75}{\sqrt{10}}=16.03$

$18+2.262\frac{2.75}{\sqrt{10}}=19.97$

5 0

3 years ago

A circle has its Center at (-2, 5) and a radius of 4 units. What is the equation of the circle?

Artist 52 [7]

$\bf \textit{equation of a circle}\\\\ 
(x- h)^2+(y- k)^2= r^2
\qquad 
center~~(\stackrel{-2}{ h},\stackrel{5}{ k})\qquad \qquad 
radius=\stackrel{4}{ r}
\\\\\\\
[x-(-2)]^2+[y-5]^2=4^2\implies (x+2)^2+(y-5)^2=16$

8 0

3 years ago

Need help pls explain

Scilla [17]

Answer:

C. 93°

Step-by-step explanation:

WY is the diameter.

WX and XY sum to 180° as half the circle.

Central angle is equal to intercepted arc:

mXY = m∠XVY = 87°
mWX = 180° - mXY = 180° - 87° = 93°

Correct choice is C

4 0

3 years ago

Read 2 more answers

Garth is packing boxes with books.the list shows how many books are in each 10 of boxes

SCORPION-xisa [38]

The median of books to a box is 9 and The mean of books to a box is 11

The complete question is

Garth is packing boxes with books. The list shows how many boxes are in each of 10 boxes. 6,14,6,18,9,9,12,10,11,15

Which statement is true about the number of boxes packed to a box?

A) The median # of books to a box is 8

B) The median # of books to a box is 9

C) The mean # of books to a box is 11

D) The mean # of books to a box is 12

<h3>What is Mean and Median ?</h3>

Mean is the average of the data given while the median is the middle point of the data.

It is given that

The data is

6, 14, 6, 18, 9, 9, 12, 10, 11, 15

The mean is

(6 + 14 + 6 + 18 + 9 + 9 + 12 + 10 + 11 + 15)/10 = 11

and the median is 9

Therefore Option B and C is the correct answer.

To know more about Mean and Median

brainly.com/question/17060266

#SPJ1

3 0

2 years ago

Which fraction expresses 36/80 in lowest terms? Please help me ;D

JulijaS [17]

To reduce a fraction to lowest terms (also called its simplest form), divide both the numerator and denominator by the GCD. For example, 2/3 is in lowest form, but 4/6 is not in lowest form (the GCD of 4 and 6 is 2) and 4/6 can be expressed as 2/3.

38/80= 19/40

3 0

3 years ago