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TiliK225 [7]
2 years ago
5

PLEASE HELP, ILL GIVE MANY POINTS AND BRAINLIEST ANSWER TOTHE FASTEST ONE

Mathematics
1 answer:
spin [16.1K]2 years ago
7 0

Answer:

WHATS THE QUESTION

Step-by-step explanation:

???rrtrttt r the r

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A computer manufacturing company has sent a mail survey to 2,800 of its randomly selected customers that have purchased a new la
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Answer:

The 96% confidence interval for the population proportion of customers satisfied with their new computer is (0.77, 0.83).

Step-by-step explanation:

We have to calculate a 96% confidence interval for the proportion.

We consider the sample size to be the customers that responded the survey (n=800), as we can not assume the answer for the ones that did not answer.

The sample proportion is p=0.8.

p=X/n=640/800=0.8

The standard error of the proportion is:

\sigma_p=\sqrt{\dfrac{p(1-p)}{n}}=\sqrt{\dfrac{0.8*0.2}{800}}\\\\\\ \sigma_p=\sqrt{0.0002}=0.014

The critical z-value for a 96% confidence interval is z=2.054.

The margin of error (MOE) can be calculated as:

MOE=z\cdot \sigma_p=2.054 \cdot 0.014=0.03

Then, the lower and upper bounds of the confidence interval are:

LL=p-z \cdot \sigma_p = 0.8-0.03=0.77\\\\UL=p+z \cdot \sigma_p = 0.8+0.03=0.83

The 96% confidence interval for the population proportion is (0.77, 0.83).

4 0
3 years ago
It takes a person 50 minutes to get to campus. He spends t minutes walking to the bus stop and the rest of the time riding the b
amid [387]

Answer:

16.2

Step-by-step explanation:

cause. ur a noob at math

8 0
3 years ago
The diagram shows triangle ABC.
const2013 [10]

Answer:

Step-by-step explanation:

5 0
2 years ago
Which expression is equivalent to the expression below?
natulia [17]

Answer:

Step-by-step explanation:

3(7-22x) = 21-66x

3 0
2 years ago
Could someone help me please please I have only 2 tries please, please<br>and please explain
Leno4ka [110]

Answer:

<h2>84in²</h2>

Step-by-step explanation:

If the first one is 7 inches long, and 6 inches wide, and the second one is also 7 inches long, but is 6x2 inches wide, then what's the area?

6x2=12

So, Picture Frame 2 = 12 inches wide

Formula for finding area = LxW

L = 7

W = 12

7x12=84

So hence, your answer is 84in²

The area of the second frame is 84in²

Thanks!

5 0
2 years ago
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