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attashe74 [19]
3 years ago
7

A coin-operated drink machine was designed to discharge a mean of 6 ounces of coffee per cup. In a test of the machine, the disc

harge amounts in 20 randomly chosen cups of coffee from the machine were recorded. The sample mean and sample standard deviation were 6.13 ounces and 0.23 ounces, respectively. If we assume that the discharge amounts are normally distributed, is there enough evidence, at the 0.05 level of significance, to conclude that the true mean discharge, differs from 6 ounces?
Mathematics
1 answer:
Anastaziya [24]3 years ago
7 0

Answer:

Step-by-step explanation:

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Evaluate: 2a + 4b when a = 10 & b = 6
Tcecarenko [31]

Answer: Option C: 44

Step-by-step explanation:

so, here we have the equation:

H(a,b) = 2a + 4b

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So we have:

H(10, 6) = 2*10 + 4*6 = 20 + 24 = 44

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A circle with radius of 1 cm sits inside a 3 cm x 4 cm rectangle.
White raven [17]

The area of shaded-region is 8.86 cm^2

Step-by-step explanation:

We can see that there is a circle and a triangle in the given figure

In order too find the area of shaded region, we have to find the area of rectangle and circle first. The area of the shaded region will be obtained by subtracting the area of circle from the area of rectangle.

So,

<u>Area of circle:</u>

Radius = r = 1 cm

So,

A_c = \pi r^2\\= 3.14 * (1)^2\\= 3.14*1\\= 3.14\ cm^2

<u>Area of rectangle:</u>

Length of rectangle = l = 4 cm

Width of rectangle = w = 3 cm

So,

A_r = l*w\\= 4 *3\\=12 cm^2

Now,

Area\ of\ shaded-region = A_r - A_c\\= 12 - 3.14\\=8.86\ cm^2

The area of shaded-region is 8.86 cm^2

Keywords: Area, shaded regions

Learn more about area at:

  • brainly.com/question/10435836
  • brainly.com/question/10541435

#LearnwithBrainly

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How many solutions does the equation<br> 10-3x+10x-7=5x-5+2x+8 have?
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It is all real numbers if that helps
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3 years ago
Read 2 more answers
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