2 years ago

PLEASE HELP ME!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics

2 answers:

Delicious77 [7]2 years ago

8 0

Answer:

Step-by-step explanation:

Zielflug [23.3K]2 years ago

8 0

Answer:

the answer is D.

Step-by-step explanation:

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If three numbers have a product of zero, what do you know about at least one of the numbers?

lisabon 2012 [21]

Answer:

Step-by-step explanation:

the product is three numbers multiplied together. any number times 0 is 0, so one of the numbers has to be 0

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2 years ago

Construct the confidence interval for the population standard deviation for the given values. Round your answers to one decimal

Alex777 [14]

Answer:

The correct answer is " $2.633< \sigma < 4.480$ ".

Step-by-step explanation:

Given:

n = 21

s = 3.3

c = 0.9

now,

$df = n-1$

$=20$

⇒ $x^2_{\frac{\alpha}{2}, n-1 }$ = $x^2_{\frac{0.9}{2}, 21-1 }$

= $31.410$

⇒ $x^2_{1-\frac{\alpha}{2}, n-1 }$ = $10.851$

hence,

The 90% Confidence interval will be:

= $\sqrt{\frac{(n-1)s^2}{x^2_{\frac{\alpha}{2}, n-1 }} } < \sigma < \sqrt{\frac{(n-1)s^2}{x^2_{1-\frac{\alpha}{2}, n-1 }}$

= $\sqrt{\frac{(21-1)3.3^2}{31.410} } < \sigma < \sqrt{\frac{(21.1)3.3^2}{10.851} }$

= $\sqrt{\frac{20\times 3.3^2}{31.410} } < \sigma < \sqrt{\frac{20\times 3.3^2}{10.851} }$

= $2.633< \sigma < 4.480$

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2 years ago

What set of numbers list the factors of 32

ser-zykov [4K]

That would be b

hope this helps

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I <3 u and I hope you have an amazing day beautiful

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