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3 years ago

7

PLZ HELP ASAP with this problem plz

1 answer:

Evgesh-ka [11]3 years ago

4 0

Answer:

Answer Choice C

Step-by-step explanation:

Because it is dilated by a factor of 3

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A researcher studying public opinion of proposed Social Security changes obtains a simple random sample of 35 adult Americans an

Y_Kistochka [10]

Answer: a) 15, b) 1.

Step-by-step explanation:

A researcher studying public opinion of proposed social security changes obtains a simple random sample of 35 adult Americans and asks them whether or not they support the proposed changes. To say that the distribution of the sample proportion of adults who respond yes, is approximately normal, how many more Americans does the researcher need to sample in the following cases?

(a) 10% of all adult Americans support the changes

Here, $np>5\ and\ n(1-p)>5$

And , $p=0.10$

So, consider the equality, to find the value of 'n'.

$np=5\\\\n\times 0.10=5\\\\n=\dfrac{5}{0.10}\\\\n=50$

So, there are $50-35=15$ more adult Americans needed.

(b) 15% of all adult Americans supports the changes

Here, $p=0.15$

So, again we get that

$np=5\\\\n\times 0.15=5\\\\n=\dfrac{5}{0.15}\\\\n=33.33\\\\n\approx 34$

So, there are $35-34=1$ more adult Americans needed.

Hence, a) 15, b) 1.

5 0

4 years ago

***SUPER HARD QUESTION THAT I CAN'T SOLVE, HOMEWORK IS DUE TOMMOROW! HELP!!!

kodGreya [7K]

It’s gonna be 9/10 or 0,9

8 0

3 years ago

1. What property allows the expression 4.7x + 10.4 + 15.3x − 8.4x + 15.6 to be simplified to the equivalent expression 20x + 10.

Elis [28]

Answer:

commutative property
distributive property

Step-by-step explanation:

The expression

4.7x + 10.4 + 15.3x − 8.4x + 15.6

can be simplified in a few stages. First of all, we use the commutative property of addition to swap terms 2 and 3.

4.7x +15.3x +10.4 -8.4x +15.6

Next, we use the distributive property to factor x from the first two terms.

(4.7 +15.3)x +10.4 -8.4x +15.6

Now we perform addition.

20x +10.4 -8.4x +15.6 . . . . . . . . equivalent expression

7 0

3 years ago

Read 2 more answers

Can someone please help me with this!! The equation y=4x+2 represents Function G. Which statement is true?

irga5000 [103]

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<em><u>HOPE </u></em><em><u>IT </u></em><em><u>HELPS </u></em>

<h2><em><u>#</u></em><em><u>C</u></em><em><u>A</u></em><em><u>R</u></em><em><u>Y</u></em><em><u> </u></em><em><u>ON </u></em><em><u>LEARNING</u></em></h2>

3 0

2 years ago

Write the slope intercept form of the equation of each line.

nadya68 [22]

Answer:

y=-3/2x+4
y=-3/2
y=3x+2
y=3/2+3

Step-by-step explanation:

3 0

3 years ago