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yawa3891 [41]
2 years ago
5

The critical value t* gets larger as the confidence level increases. True or false?

Mathematics
1 answer:
posledela2 years ago
5 0

Answer:

We can find the critical value t_{\alpha/2}

And for this case if the confidence increase the critical value increase so then this statement is True

Step-by-step explanation:

For a confidence level given c, we can find the significance level like this:

\alpha=1 -c

And with the degrees of freedom given by:

df=n-1

We can find the critical value t_{\alpha/2}

And for this case if the confidence increase the critical value increase so then this statement is True

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3 years ago
Each of the c children at a park will receive at least 3 balloons. If 150 balloons are given out in all, what is the maximum num
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Answer:

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3 0
2 years ago
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The combined average weight of an okapi and a llama is 450450 kilograms. The average weight of 33 llamas is 190190 kilograms mor
Nataliya [291]

Answer:

Okapi 290 kg

Llama 160 kg


Step-by-step explanation:

Let weight of each llama be  l

Let weight of each okapi be  o


<em>Given, combined weight of 1 okapi and 1 llama is 450, we can write:</em>

<em>l+o=450</em>

<em>Also, average weight of 3 llama is 190 more than the average weight of 1 okapi, thus we can write:</em>

<em>3l-190=o</em>


Now, substituting 2nd equation into 1st equation, we can solve for weight of 1 llama:

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Each okapi weigh 290 kg

5 0
3 years ago
The surface area of a cube is 384 square inches. What is the volume of the cube?
lozanna [386]
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I'm pretty sure this is correct, maybe just double check and see if this makes any sense according to what you're learning? I'm almost 100% sure. Hope this helps!
6 0
3 years ago
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If 90 is the height, and 13.5 is the radius, then what is the surface area of this cylinder?
a_sh-v [17]
-------------------------------------------------------------------------
Formula
-------------------------------------------------------------------------
Surface area = 2πr² + 2πrh

-------------------------------------------------------------------------
Find Surface Area
-------------------------------------------------------------------------
Total surface area = 2 x π x (13.5)² + 2 x π x (13.5) x (90)
Total surface area = 364.5π + 2430π
Total surface area = 2794.5π
Total surface area = 8774.73 unit² (Take π as 3.14)

-------------------------------------------------------------------------
Answer: 8774.73 unit²
-------------------------------------------------------------------------
3 0
2 years ago
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