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2 years ago

I hope someone can help me here please don't answer nonsense!

Mathematics

1 answer:

Karolina [17]2 years ago

8 0

Answer:

30 degrees

Step-by-step explanation:

Angle B is an inscribed angle -- its vertex is on the circle and it intersects the circle in two points, A and C.

The measure of an inscribed angle is always one half the measure of the intercepted arc. The intercepted arc has measure 60 degrees, so the measure of angle B is 30 degrees.

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Using excel, answer the following questions. Write down the Excel formulas used at each step.1. General Junkfoods has collected

tiny-mole [99]

Answer:

See explanation

Step-by-step explanation:

Required

The average weight produced

The question is incomplete, as the required cells are not given and there are other missing details.

However, I will give a general explanation of calculating average in Excel

The required formula is:

=AVERAGE(Cell Range)

Assume the cells that contain the boxes are: cells A10 to A10010

The average will be calculated as:

=AVERAGE(A10:A10010)

6 0

3 years ago

To test whether the mean time needed to mix a batch of material is the same for machines produced by three manufacturers, Jacob'

TiliK225 [7]

Answer:

a) Independent variable: The manufacturer. It's a categorical and qualitative variable.

b) Dependent variable: time needed to mix the material, and is a quantitative variable

c) On this case since we want to compare the means of different groups of manufacturers on specific 3 manufacturers (A,B and C) the best way to analyze this is with the ANOVA procedure.

d) ANOVA is the correct procedure since this procedure is used to analyze the differences among group means in a sample, and that's what we want to analyze.

The hypothesis for this case are given by

Null hypothesis: $\mu_{A}=\mu_{B}=\mu_{C}$

Alternative hypothesis: Not all the means are equal $\mu_{i}\neq \mu_{j}, i,j=A,B,C$

Step-by-step explanation:

Previous concepts

Analysis of variance (ANOVA) "is used to analyze the differences among group means in a sample".

The sum of squares "is the sum of the square of variation, where variation is defined as the spread between each individual value and the grand mean"

Part A

Independent variable: The manufacturer. It's a categorical and qualitative variable.

Part B

Dependent variable: time needed to mix the material, and is a quantitative variable

Part C

On this case since we want to compare the means of different groups of manufacturers on specific 3 manufacturers (A,B and C) the best way to analyze this is with the ANOVA procedure.

Part D

ANOVA is the correct procedure since this procedure is used to analyze the differences among group means in a sample, and that's what we want to analyze.

The hypothesis for this case are given by

Null hypothesis: $\mu_{A}=\mu_{B}=\mu_{C}$

Alternative hypothesis: Not all the means are equal $\mu_{i}\neq \mu_{j}, i,j=A,B,C$

In order to find the mean square between treatments (MSTR), we need to find first the sum of squares and the degrees of freedom.

If we assume that we have $p$ groups and on each group from $j=1,\dots,p$ we have $n_j$ individuals on each group we can define the following formulas of variation:

$SS_{total}=\sum_{j=1}^p \sum_{i=1}^{n_j} (x_{ij}-\bar x)^2$

$SS_{between}=SS_{model}=\sum_{j=1}^p n_j (\bar x_{j}-\bar x)^2$

$SS_{within}=SS_{error}=\sum_{j=1}^p \sum_{i=1}^{n_j} (x_{ij}-\bar x_j)^2$

And we have this property

$SST=SS_{between}+SS_{within}$

6 0

3 years ago

Solve for x……………………….

Jobisdone [24]

Answer:

Step-by-step explanation:

Find other side:

116 + x = 180

-116 -116

------------------

x = 64

Find missing triangle angle:

50 + 64 + x = 180

114 + x = 180

-114 -114

-------------------

x = 66

Hope this helped.

4 0

3 years ago

Read 2 more answers

Factor each. Please help!

andreyandreev [35.5K]

The answer is option B

5 0

3 years ago

What is the area of 25 pi?

joja [24]

Answer:

The area of a circle is equal to pi times the radius squared so that means the radius of this circle is the square root of. 25!that means the radius is 5

5 0

3 years ago

I hope someone can help me here please don't answer nonsense!​

I hope someone can help me here please don't answer nonsense!