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faust18 [17]
3 years ago
11

I need help asaapppp​

Mathematics
1 answer:
Dmitriy789 [7]3 years ago
6 0

Answer:

Step-by-step explanation:

the 3rd one

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Which of the following pieces of information could you use to conclude that
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Side WX = 3
The fourth one will be the answer

It’s like a ratio method

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3 years ago
On the basis of sample of 25 students in a large campus laboratory, it appears that 8 students smoke. A 95% CI estimate of the p
artcher [175]

Answer:

a. [0.137, 0.503]

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence interval 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

For this problem, we have that:

A sample of 25 students in the lab, of whom 8 smoke. So n = 25, \pi = \frac{8}{25} = 0.32

95% confidence interval

So \alpha = 0.05, z is the value of Z that has a pvalue of 1 - \frac{0.05}{2} = 0.975, so z = 1.96.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.32 - 1.96\sqrt{\frac{0.32*0.68}{25}} = 0.137

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.32 + 1.96\sqrt{\frac{0.32*0.68}{25}}{119}} = 0.503

The correct answer is:

a. [0.137, 0.503]

3 0
3 years ago
PLEASE HELP, ASAP. I WILL MARK YOU BRAINLIEST‼️
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Im sorry but i really cant see any of the words or number and ik this
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3 years ago
Multiply: (x+3y)(x-2y)? Show steps please
bezimeni [28]

Answer:

x² + xy - 6y²

Step-by-step explanation:

FOIL

(x+3y)(x-2y)

F= x²

O= -2xy

I= 3xy

L= -6y²

Add these together = x² + xy - 6y²

7 0
4 years ago
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Which algebraic expression has a term with a coefficient of 3
ss7ja [257]

Answer:

(3x +2)× 2

Step-by-step explanation:

close to a variable would be a term like in the above stated answer that I have the terms in the equation is 2

4 0
3 years ago
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