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GrogVix [38]
2 years ago
9

A television sports commentator wants to estimate the proportion of Americans who follow professional football. What sample size

should be obtained if he wants to be within 3 percentage points with 95% confidence if
(a) he uses a 2010 estimate of 53% obtained from a Harris poll?
(b) he does not use any prior estimates?
(c) Why are the results from parts (a) and (b) so close?
Mathematics
1 answer:
Lesechka [4]2 years ago
8 0

Answer:

A.1,063

B.1.067

C.Since 0.2491 is close 0.25 this means that the results from parts (a) and (b) are close.

Step-by-step explanation:

A. If he uses a 2010 estimate of 53% obtained from a Harris poll

Since E is 0.03

The next stel is to find Z using this formula

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The value of x in the linear equation 4(x + 5) = 9x + 4x − 34 is 6 after applying the property.

<h3>What is a linear equation?</h3>

It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.

If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.

We have linear equation in one variable:

4(x + 5) = 9x + 4x − 34

4x + 20 = 9x + 4x − 34   (Distributive Property)

4x + 20 -4x + 34= 9x + 4x − 34 -4x +34    

(Subtraction Property of Equality and Addition Property of Equality)

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Thus, the value of x in the linear equation 4(x + 5) = 9x + 4x − 34 is 6 after applying the property.

Learn more about the linear equation here:

brainly.com/question/11897796

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1 year ago
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Step-by-step explanation:(don’t worry I’m a idiot too)

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