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4 years ago

7

I

1 answer:

raketka [301]3 years ago

3 0

Answer:

um it there and other number?

Step-by-step explanation:

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How many outcomes are possible if each coin is flipped once?

marusya05 [52]

How many coins are being flipped?

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3 years ago

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not sure how I would solve this

zmey [24]

Answer:

you graph the points on the line

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3 years ago

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-2x + 4 = 3<br>how would you solve this problem?

ikadub [295]

-2x+4=3
move the 4

-2x+4=3
-4 -4

-2x=-1
then you would move the -2 by using division

-2x=-1
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4 0

3 years ago

Which of the following represents the sentence shown? “Twice a number, n, decreased by six is fourteen.”

Fed [463]

Twice the number n will be expressed as 2n. So, that will be in our final answer. In order to decrease the number by 6, we will subtract 6. So there will be a - 6 in our final answer. Together, this is 2n - 6, and that is the same as the second option. So, the second option is the correct one.

8 0

3 years ago

Automobile mechanics conduct diagnostic tests on 150 new cars of particular make and model to determine the extent to which they

galben [10]

Answer: 0.0944

Step-by-step explanation:

Given : Sample size of cars : n= 150, sample size is greater than 30 , so we use z-test.

Number of cars tested do have faulty catalytic converters =42

Then the proportion of cars have faulty catalytic converters : $\hat{p}=\dfrac{42}{150}=0.28$

Critical value of z for 99% confidence level : $z_{\alpha/2}=2.576$

Formula for Margin of error :

$E=z_{\alpha/2}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

$E=(2.576)\sqrt{\dfrac{0.28(1-0.28)}{150}}\\\\=0.0944377199216\approx0.0944\ \text{Rounded to four decimal places}$

Hence, the required margin of error = $0.0944$

6 0

3 years ago