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2 years ago

State the name of the angle

Mathematics

1 answer:

Bess [88]2 years ago

6 0

The answer is C, hope this helps

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3 months ago Santos could walk 2 miles in 40 min. today he can walk 2 miles in 25 min. find percent of change

uranmaximum [27]

The percentage of change is -37.5%

8 0

2 years ago

What is the answer to (4x10)x10

marishachu [46]

4X10=40X10=400 PEMDAS

3 0

3 years ago

Read 2 more answers

The amount of lateral expansion (mils) was determined for a sample of n = 8 pulsed-power gas metal arc welds used in LNG ship co

Alona [7]

Answer:

95% Confidence interval for the variance:

$3.6511\leq \sigma^2\leq 34.5972$

95% Confidence interval for the standard deviation:

$1.9108\leq \sigma \leq 5.8819$

Step-by-step explanation:

We have to calculate a 95% confidence interval for the standard deviation σ and the variance σ².

The sample, of size n=8, has a standard deviation of s=2.89 miles.

Then, the variance of the sample is

$s^2=2.89^2=8.3521$

The confidence interval for the variance is:

$\dfrac{ (n - 1) s^2}{ \chi_{\alpha/2}^2} \leq \sigma^2 \leq \dfrac{ (n - 1) s^2}{\chi_{1-\alpha/2}^2}$

The critical values for the Chi-square distribution for a 95% confidence (α=0.05) interval are:

$\chi_{0.025}=1.6899\\\\\chi_{0.975}=16.0128$

Then, the confidence interval can be calculated as:

$\dfrac{ (8 - 1) 8.3521}{ 16.0128} \leq \sigma^2 \leq \dfrac{ (8 - 1) 8.3521}{1.6899}\\\\\\3.6511\leq \sigma^2\leq 34.5972$

If we calculate the square root for each bound we will have the confidence interval for the standard deviation:

$\sqrt{3.6511}\leq \sigma\leq \sqrt{34.5972}\\\\\\1.9108\leq \sigma \leq 5.8819$

6 0

3 years ago

If there are more negative numbers in an equation will the answer be negative?

Free_Kalibri [48]

Answer:

Not Always

example:

Yes:

12 - 4 + 20 - 16 - 32

32 - 48 = -20

No:

23 - 8 + 21 - 7 + 2 - 6 = 25

5 0

3 years ago

Read 2 more answers

No entiendo ayuda plsssss

natulia [17]

Answer:

23/24

Step-by-step explanation:

I hope it will help

5 0

2 years ago