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3 years ago

13

Find the value of each variable. If your answer is not an integer, write it in simplest radical form with the denominator ration

alized

1 answer:

ASHA 777 [7]3 years ago

3 0

Answer:

I would need to see the variables to answer this questions.

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If we wanted to create a new 90% confidence interval from a different sample for the proportion of those with a two on one date

slava [35]

Answer: 271

Step-by-step explanation:

The formula we use to find the sample size is given by :-

$n=p(1-p)(\dfrac{z_{\alpha/2}}{E})^2$

, where $z_{\alpha/2}$ is the two-tailed z-value for significance level of $(\alpha)$

p = prior estimation of the proportion

E = Margin of error.

If prior estimation of the proportion is unknown, then we take p= 0.5 , the formula becomes

$n=0.5(1-0.5)(\dfrac{z_{\alpha/2}}{E})^2$

$n=0.25(\dfrac{z_{\alpha/2}}{E})^2$

Given : Margin of error : E= 0.05

Confidence level = 90%

Significance level $\alpha=1-0.90=0.10$

Using z-value table , Two-tailed z-value for significance level of $0.10$

$z_{\alpha/2}=1.645$

Then, the required sample size would be :

$n=0.25(\dfrac{1.645}{0.05})^2$

Simplify,

$n=270.6025\approx271$

Hence, the required minimum sample size =271

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3 years ago

Graph the equation -5x + 2y=2

dimulka [17.4K]

Slope = 5 over 2
Y-intercept = 1

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3 years ago

What is the slope of the line shown below?<br> A. -2/3<br> B.-3/2<br> C. 3/2<br> D. 2/3

Annette [7]

Answer:

-2/3

Step-by-step explanation:

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2 years ago

Solve each system by substitution<br><br>-5x+3y=22<br>8x-2y=-24

Ivan

$x= 193/22y= 1410/11$

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2 years ago

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if you use 8 pieces of stained glass to make a stained glass window. How many pieces of glass will be needed to make a window th

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The answer is 108 pieces

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3 years ago