4 years ago

Can someone answer this.

1 answer:

4 0

Yeah sure. It looks like one of those dilated problems since the smaller one is an exact copy of the bigger one except its, well you know, smaller. So it would be 5.

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In an article in Marketing Science, Silk and Berndt investigate the output of advertising agencies. They describe ad agency outp

fredd [130]

Answer: (7.27%, 7.55%)

Step-by-step explanation:

As per given , we have

Sample size : n= 392

Sample mean : $\overline{x}=7.41\%$

$\sigma=1.43\%$

Critical two-tailed z-value for 95% confidence = $z_{\alpha/2}=1.96$

Required confidence interval would be :

$7.41\%\pm (1.96)\dfrac{1.43\%}{\sqrt{392}}\\\\=7.41\%\pm 0.14\%\\\\=(7.27\%, 7.55\%)$

Hence, the required 95% confidence interval for the mean percentage share of billing volume from network television for the population of all U.S. advertising agencies : (7.27%, 7.55%)

7 0

4 years ago

What is the vertex of a parabola represented by the equation f(x) = -2 (x-4)^2 - 7

zmey [24]

Answer:

f ( x ) = x ^2 + 1

f ( x ) = 7 x^ 2 + 5 x − 4

f ( x ) = 4 ( x − 3 ) ^2

Step-by-step explanation:

7 0

3 years ago

A square pyramid is cut by a plane perpendicular to the base and through the top vertex of the pyramid. What shape is formed?

Lynna [10]

isosceles triangle

#CarryOnLearning. (◍•ᴗ•◍)

4 0

3 years ago

675-319 = (675-319) mL 1.0 g/mL

Brilliant_brown [7]

086.869 is it I think? Be specific

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3 years ago

I need help on 9. 10. 11.

netineya [11]

9. there are 22 signs
10. 34.46 square miles
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8 0

4 years ago