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4 years ago

Place the following decimals on the number line below the numbers are 6.2 6.4 6.60 6.80

1 answer:

7 0

$|.....||.....||.....||.....||.....||.....||.....||.....||.....| \\6.1 \ \ 6.2 \ \ \ \ \ \ 6.4 \ \ \ \ \ \ \ 6.60 \ \ \ \ \ \ \ 6.80 \ \ \ \ \ \ \ 7$

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A coffeehouse wishes to see if customers have any preference among 5 different brands of coffee. a sample of 200 customers provi

vitfil [10]

Answer:

The answer is 37.45

Step-by-step explanation:

The distribution is uniform so expected value of each brand is

E = 200/5

E = 40

Chi Square statistic is

$x^2 = \frac{(30-40)^2}{40} +\frac{(65-40)^2}{40} + \frac{(18-40)^2}{40} + \frac{(39-40)^2}{40} + \frac{(55-40)^2}{40}$

$x^2=\frac{100+625+484+64+225}{40}$

$x^2=\frac{1498}{40}$

$x^2= 37.45$

Hence, the chi-square test statistic χ2 to test the claim that the distribution is uniform is 37.45

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3 years ago

Sammy akers is 58.48 cm long. what is his lenght in hectometers

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Sammy’s Akers are 0.005848 hectometers long

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2 years ago

I need an answer right away

GuDViN [60]

Awnser is B
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3 years ago

Read 2 more answers

6. A sector of a circle is a region bound by an arc and the two radii that share the arc's endpoints. Suppose you have a dartboa

Aliun [14]

Given the dartboard of diameter $20in$ , divided into 20 congruent sectors,

The central angle is $18^\circ$

The fraction of a circle taken up by one sector is $\frac{1}{20}$

The area of one sector is $15.7in^2$ to the nearest tenth

The area of a circle is given by the formula

$A=\pi r^2$

A sector of a circle is a fraction of a circle. The fraction is given by $\frac{\theta}{360^\circ}$ . Where $\theta$ is the angle subtended by the sector at the center of the circle.

The formula for computing the area of a sector, given the angle at the center is

$A_s=\dfrac{\theta}{360^\circ}\times \pi r^2$

<h3>Given information</h3>

We given a circle (the dartboard) with diameter of $20in$ , divided into 20 equal(or, congruent) sectors

<h3>Part I: Finding the central angle</h3>

To find the central angle, divide $360^\circ$ by the number of sectors. Let $\alpha$ denote the central angle, then

$\alpha=\dfrac{360^\circ}{20}\\\\\alpha=18^\circ$

<h3>Part II: Find the fraction of the circle that one sector takes</h3>

The fraction of the circle that one sector takes up is found by dividing the angle a sector takes up by $360^\circ$ . The angle has already been computed in Part I (the central angle, $\alpha$ ). The fraction is

$f=\dfrac{\alpha}{360^\circ}\\\\f=\dfrac{18^\circ}{360^\circ}=\dfrac{1}{20}$

<h3>Part III: Find the area of one sector to the nearest tenth</h3>

The area of one sector can be gotten by multiplying the fraction gotten from Part II, with the area formula. That is

$A_s=f\times \pi r^2\\=\dfrac{1}{20}\times3.14\times\left(\dfrac{20}{2}\right)^2\\\\=\dfrac{1}{20}\times3.14\times10^2=15.7in^2$

Learn more about sectors of a circle brainly.com/question/3432053

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3 years ago

What is the relative minimum of the function?

tatiyna

relative minimum is -2 when x is -3

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3 years ago