3 years ago

How do I explain the answer

Mathematics

2 answers:

xz_007 [3.2K]3 years ago

8 0

Explaining the answer means to write down the steps you took to solve the problem

zepelin [54]3 years ago

4 0

Explaining the answer with math problems just means show your work

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As the carbon content in steel increases, its ductility tends to decrease. A researcher at a steel company measures carbon conte

mixer [17]

Answer:

d. -5.666 to -0.926

Step-by-step explanation:

Here a pivotal quantity is $T = \frac{\hat{\beta_{1}}-\beta_{1}}{se(\hat{\beta_{1}})}$ where $\beta_{1}$ is the true slope of the regression equation (unknown), $\hat{\beta_{1}}$ is its least square estimate and $se(\hat{\beta_{1}})=1.097$ is its estimated standard error. And T has t-distribution with n-2=15-2=13 degrees of freedom (n is the sample size). We have that $\hat{\beta_{1}} = -3.30$ , and because we want the 95% confidence interval, we should use the 2.5th quantile of the t distribution with 13 df, this value is -2.16 and the 95% confidence intervale is given by $\hat{\beta_{1}}\pm t_{0.025}se(\hat{\beta_{1}})$ , i.e., $-3.30\pm (2.16)(1.097)$ . Therefore, the 95% confidence interval explicitly is (-5.666, -0.926)

6 0

4 years ago

Need to pass this class!

alexandr1967 [171]

4w+5+33=90
4w=90-5-33
4w=52
w=13

6 0

3 years ago

Find the distance between A and B.<br> A) 7 units<br> B) 6 units<br> C) 5 units<br> 7 units

tatyana61 [14]

It’s 7 unites so I think it’s a

6 0

3 years ago

Read 2 more answers

A square has a side of 6.25 feet. What is the area in square feet? Round to the nearest tenth and do NOT include units

frez [133]

since it's a square all sides are equal so

6.25 multiplied by 6.25

= 39.1 square feet

8 0

3 years ago

In the pup tent shown at the right, the two sides meet at the top to form a 72 angle. If the tent pole bisects the angle, what a

Sphinxa [80]

Answer:

36°

Step-by-step explanation:

The image of the question is obtained online and attached to the solution of this question.

The tent pole is the line in the middle of the triangle and it is stated explicitly in the question that this tent pole bisects the angle that the two sides make with each other at the top.

So, the angle that the tent pole makes with each side = (72°/2) = 36°

Hope this Helps!!!

4 0

3 years ago