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iogann1982 [59]
2 years ago
11

Brainles app doesn’t nothing to help me

Mathematics
1 answer:
castortr0y [4]2 years ago
3 0

Answer:

true but can u help me or u can go to questioncove its better then branily but can u help me pls

Step-by-step explanation:

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Do one of the​ following, as appropriate.​ (a) Find the critical value z Subscript alpha divided by 2​, ​(b) find the critical v
aliya0001 [1]

Answer:

t=\pm 2.95

Step-by-step explanation:

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".  

The t distribution or Student’s t-distribution is a "probability distribution that is used to estimate population parameters when the sample size is small (n<30) or when the population variance is unknown".

The shape of the t distribution is determined by its degrees of freedom and when the degrees of freedom increase the t distirbution becomes a normal distribution approximately.  

Data given

Confidence =0.99 or 99%

\alpha=1-0.99=0.01 represent the significance level

n =16 represent the sample size

We don't know the population deviation \sigma

Solution for the problem

For this case since we don't know the population deviation and our sample size is <30 we can't use the normal distribution. We neeed to use on this case the t distribution, first we need to calculate the degrees of freedom given by:

df=n-1=16-1=15

We know that \alpha=0.01 so then \alpha/2=0.005 and we can find on the t distribution with 15 degrees of freedom a value that accumulates 0.005 of the area on the left tail. We can use the following excel code to find it:

"=T.INV(0.005;15)" and we got t_{\alpha/2}=-2.95 on this case since the distribution is symmetric we know that the other critical value is t_{\alpha/2}=2.95

8 0
3 years ago
Which expression is equivalent to (XY^−6)^2<br><br> XY^−36<br> x^2y^−12<br> x ^2y^12<br> xy^36
Margaret [11]

Answer:

answer is b

Step-by-step explanation:

look at picture shown

8 0
3 years ago
while playing mini golf, you hit the ball off of a wall to attempt at making it into the hole. The ball is located (5,4) and the
Marat540 [252]
9 times 4 equal 36 and 5 times 8 equals 40 
6 0
3 years ago
Solution for -7x+3y=2?
Mazyrski [523]

Answer:

x-intercept(s):

(

−

2

7

,

0

)

y-intercept(s):

(

0

,

2

3

)

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Solve the following <br> 8903=e
Semenov [28]

\huge\text{Hey there!}

\huge\textbf{Equation:}

\mathsf{8,903 = e^{5x}}}

\huge\textbf{Simplify:}

\mathsf{8,903 = e^{5x}}}

\mathsf{e^{5x} = 8,903}}

\huge\textbf{Solve for the exponent:}

\large\textsf{We get: }\downarrow\\\\\mathsf{2.718282^{5x}=8903}

\huge\textbf{Take the logarithm from both sides:}

\mathsf{log(2.718282^{5x}) = log(8,903x)}

\large\textsf{We get:}\\\\\mathsf{5x \times log(2.718282)=log(8903)}

\huge\textbf{Simplify it:}

\mathsf{5x = \dfrac{log(8903)}{log(2.718282)}}

\large\textsf{We get: }\\\\\mathsf{5x = 9.094143}

\huge\textbf{Divide 5 to both sides:}

\mathsf{\dfrac{5x}{5} = \dfrac{9.094143}{5}}

\huge\textbf{Simplify it:}

\mathsf{x= \dfrac{9.094143}{5}}

\mathsf{x = 1.818829}

\mathsf{x \approx 2}

\huge\textbf{Therefore, your answer should be:}

\huge\boxed{\mathsf{x =}\frak{\ 1.818829}}\huge\checkmark

\large\textbf{Or if you're estimating your answer}\downarrow

\huge\boxed{\mathsf{x \approx }\frak{\ 2}}\huge\checkmark

\huge\text{Good luck on your assignment \& enjoy your day!}

~\frak{Amphitrite1040:)}

8 0
1 year ago
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