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marusya05 [52]
3 years ago
8

For the following triangle,

Mathematics
1 answer:
Margarita [4]3 years ago
4 0

Answer:

3 angles?

Step-by-step explanation:

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The average annual premium for automobile insurance in the United States is $1411. A representative sample of annual premiums fo
Harrizon [31]

Using confidence interval concepts, it is found that:

a) The point estimate is the sample mean.

b) The confidence interval is: \overline{x} \pm T\frac{s}{n}

c) If $1411 is between the bounds of the interval yes, otherwise no.

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

  • At item a, it asks to provide a point estimate for the population mean, which is the sample mean \overline{x}

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

Item b:

  • In the spreadsheet, it is possible to find the <em>standard deviation for the sample</em>, thus, the t-distribution is used.
  • The confidence interval will be given by:

\overline{x} \pm T\frac{s}{n}

In which:

  • \overline{x} is the sample mean.
  • T is the critical value, from the t-distribution, with a two-tailed area of \frac{1 - 0.95}{2} = 0.025 and n-1 degrees of freedom.
  • s is the standard deviation for the sample.
  • n is the sample size.

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

Item c:

We have to check if 1411 is between \overline{x} - T\frac{s}{n} and \overline{x} +T\frac{s}{n}.

  • If it is, the interval includes the National Average, otherwise, it does not.

A similar problem is given at brainly.com/question/24232455

7 0
3 years ago
Jess wants to build the birdhouse shown. She bought a 25​-inch by 50​-inch sheet of plywood. Does Jess have enough wood to make
Lemur [1.5K]

Answer:

it depends on how big jess wants to make  her birdhouse.

8 0
3 years ago
Simplify this expression: 13 + (–12) – (–5) = ?<br> A. 6<br> B. –6<br> C. –30<br> D. 30
Anuta_ua [19.1K]
13 + (-12) - (-5)

13 - 12 + 5

1 + 5

= 6.

Answer is A)
3 0
3 years ago
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Mhanifa could you please answer this last question for me. What is MXH in the circle below? A.Major arc, B.Minor Arc, C Semicirc
Nookie1986 [14]

Answer:

  • C. Semicircle

Step-by-step explanation:

MH is the diameter and it divides the circle in half.

MXH is the arc between the endpoints of the diameter, therefore is  semicircle.

Correct choice is C

5 0
3 years ago
Solve the following equation:<br> 7x– 9=19
Gelneren [198K]

Answer:

x=4

Step-by-step explanation:

7x - 9 = 19

add 9 to both sides

7x = 28

divide by 7

x = 4

4 0
2 years ago
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