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3 years ago

Find the critical value or values of x² based on the given information.

Mathematics

1 answer:

Lelechka [254]3 years ago

4 0

Using a calculator for the chi-square distribution, the critical value is given by:

A) 20.090

<h3>How to find the critical value of the chi-square distribution?</h3>

For a chi-square critical value, three parameters are needed:

The number of degrees of freedom, which is one less than the sample size.

The significance level.

The tail.

In this problem, we have a one-tailed test(as we are testing if the mean is greater than a value), with a significance level of 0.01 and 8 df, hence, using a calculator, the critical value is of 20.09, hence option A is correct.

More can be learned about the chi-square distribution at brainly.com/question/17001009

#SPJ1

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Super confused new topic please help

kumpel [21]

Answer:

1960cm squared

Step-by-step explanation:

in case you're still confused ask where you're still confused and I'll offer my assistance.good day.

5 0

2 years ago

The picture below shows the path that Puppy Liz is running. The electrical post is 40 feet tall. Puppy Liz usually starts at the

zimovet [89]

Answer:

Puppy Liz runs 34.61 ft.

Step-by-step explanation:

From the figure we can extract two triangles: one with angle 34° and adjacent 40ft, the other with angle 34°+23° and adjacent 40ft.

Let us call the distance from the pole to the fire hydrant $d_1$ , and the distance from the pole to the bench $d_2$ , then the distance $d$ from the fire hydrant to the bench is

$d=d_2-d_1$

which is the distance the Puppy Liz runs.

Now, from trigonometry we have

$tan(34^o)=\frac{d_1}{40}\\\\\therefore d_1= 40*tan(34^o)\\\\ \boxed{d_1=26.98ft}$

and

$tan(34^o+23^o)=\frac{d_2}{40}$

$d_2=40*tan(34^o+23^o)\\\\\boxed{d_2=61.59}$

Therefore, the distance $d$ Puppy Liz runs is

$d=d_2-d_1$

$d=61.59ft-26.98ft\\\\\boxed{d=34.61ft}$

6 0

4 years ago

What is the discriminant <br><br> 3g^2+10= -15g

Ilia_Sergeevich [38]

$\bf 3g^2+10=-15g\implies 3g^2+15g+10=0
\\\\\\
\begin{array}{llcccll}
& 3g^2& +15g& +10\\
&\uparrow &\uparrow &\uparrow \\
&a&b&c
\end{array}
\\\\\\
discriminant\implies b^2-4ac\implies 15^2-4(3)(10)$

7 0

3 years ago

Janis earns $8 per hour at a part time job. how much does she earn working 3 hours 15 minutes

Ronch [10]

She earns 26 dollars.

7 0

3 years ago

Read 2 more answers

If AB if the midsegment find x SHOW WORK

Leya [2.2K]

AB is the midsegment, so segment AB is half as long as segment XZ

Put another way, segment XZ is two times longer than segment AB, so,

XZ = 2*AB
34 = 2*(3x-1)
34 = 6x-2
6x-2 = 34
6x = 34+2
6x = 36
x = 36/6
x = 6

Answer: 6

Side Note: AB is 17 units long

3 0

3 years ago