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slavikrds [6]
3 years ago
5

Depending on the day of the week, a border guard searches every nth person coming across the border. Each Tuesday every 7th pers

on is checked. What is the name of this method of sampling?
a. Simple Random Sampling
b. Systematic Random Sampling
Mathematics
1 answer:
ELEN [110]3 years ago
3 0
Systematic Random sampling
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Answer:

Option C

Step-by-step explanation:

The standard deviation of any sample is inversely proportional to the size of the sample. Thus, as the sample size increases, the standard deviation reduces or vice versa. Thus, option A is in correct

As the sample size increases, the confidence in estimate also increases Hence, option B is also incorrect

Option D is true to its words , hence it is also a wrong choice for this question

Hence, option C is correct

6 0
3 years ago
I’m not sure how to do this
seraphim [82]
\bf \cfrac{\frac{x+4}{3}+\frac{1}{x}}{5+\frac{15}{x}}\qquad \cfrac{\impliedby \frac{LCD}{3x}}{\impliedby \stackrel{LCD}{x}}\implies \cfrac{\quad \frac{x(x+4)+3(1)}{3x}\quad }{\frac{x(5)+(1)15}{x}}\implies \cfrac{\quad \frac{x^2+4x+3}{3x}\quad }{\frac{5x+15}{x}}

\bf \cfrac{x^2+4x+3}{3\underline{x}}\cdot \cfrac{\underline{x}}{5x+15}\implies \cfrac{x^2+4x+3}{3(5x+15)}\implies \cfrac{x^2+4x+3}{15x+45}
\\\\\\
\cfrac{(x+3)(x+1)}{15x+45}\implies \cfrac{\underline{(x+3)}(x+1)}{15\underline{(x+3)}}\implies \cfrac{x+1}{15}
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3 years ago
Use the​ slope-intercept form to graph the equation y=5/4x-1
schepotkina [342]

Answer:

m = 5/4

(0,-1),(4/5,0)

Join the dots to obtain the graph!

3 0
3 years ago
Give an example question ( use words and numbers)
Ymorist [56]
A 2 - - 7 = 9
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Answer:

Can you help me then I will help you?

Step-by-step explanation:

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