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SOVA2 [1]
3 years ago
15

Please help last question !!!!!! Please help me !!!!!!!

Mathematics
1 answer:
marusya05 [52]3 years ago
6 0
Area of shaded rectangle:
A = L x W
A = 0.6 x 0.7
A = 0.42


answer
0.42 square units

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After calculating the sample size needed to estimate a population proportion to within 0.05, you have been told that the maximum
Svetlanka [38]

Answer:  40000

Step-by-step explanation:

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

n=p(1-p)(\dfrac{z_{\alpha/2}}{E})^2, where p is the prior estimate of the population proportion.

Here we can see that the sample size is inversely proportion withe square of margin of error.

i.e. n\ \alpha\ \dfrac{1}{E^2}

By the equation inverse variation, we have

n_1E_1^2=n_2E_2^2

Given : E_1=0.05   n_1=1000

E_2=0.025

Then, we have

(1000)(0.05)^2=n_2(0.025)^2\\\\\Rightarrow\ 2.5=0.000625n_2\\\\\Rightarrow\ n_2=\dfrac{2.5}{0.000625}=4000

Hence, the sample size will now have to be 4000.

6 0
3 years ago
Change 0.72 to a percent
tino4ka555 [31]
Multiply 0.75 by 100

75 %
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Both inverse variation’s. K=constant=9,6
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3 years ago
This table represents a funtion. What is f(-2) ?
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State whether the data described below are discrete or​ continuous, and explain why. The exact mass (in grams )of food eaten by
NARA [144]

Answer:

A. The data are continuous because the data can take on any value in an interval.

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This type of data is continous, not discrete. The mass can take any value within the domain of positive real numbers. It represents a physic variable, and they are always continous.

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