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3 years ago

Could I please have the answer to this problem? Could I also please have an explanation, as I'm confused and I don't understand.

Mathematics

2 answers:

tatiyna3 years ago

8 0

Answer:

B is the answer as it's means intersection and none of the numbers intersect x and y

Elden [556K]3 years ago

6 0

Answer:

Your ans is B as In the intersection of two sets X and Y denoted by X∩ Y is the set containing all elements of X that also belong to Y (or equivalently, all elements of Y that also belong to X).

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When a survey asked subjects whether they would be willing to accept cuts in their standard of living to protect the environmen

Nataly_w [17]

Answer:

$a.\ \hat p=0.2877\\\\b.\ ME=0.0263\\\\c.\ 0.2614$

d. -Sample selection was random

-Individual observations are independent of each other

np≥10

Step-by-step explanation:

a. The point estimate of a sample proportion is obtained using the formula;

$\hat p=\frac{x}{n}\\\\x-sample \ size\\n-population\ size\\\hat p-point \ estimate\\\\\\\\\therefore \hat p=\frac{328}{1140}\\\\\\=0.2877$

Hence, the point estimate of the proportion of the population is 0.2877

b. The desired margin of error is the calculated using the point estimate value as follows:

$ME=z\sqrt{\frac{\hat p(1-\hat p)}{n}}\\\\z_{0.025}=1.96\\\\\hat p=0.2877\\\\\therefore ME=1.96\times \sqrt{\frac{0.2877(1-0.2877)}{1140}} \\\\=0.0263$

Hence, the desired margin of error for the sample proportion is 0.0263

c. Given a confidence level of 95%, the confidence interval can be calculated as:

$CI_{95\%}=\hat p\pm ME\\\\=0.2877\pm 0.0263\\\\=[0.2614,0.3140]$

Hence, the confidence interval at 95% confidence level is 0.2614<p<0.3140

#We are 95% confident that the interval estimate contains the desired proportion.

d. The assumptions are:

-The sample size is is more than 10 or equal to 10:

$n\hat p\geq 10\\n\hat p=0.2877\times 328=94.37\geq 10\\\\\therefore np\geq 10$

-The selection was from a randomized experiment.

-The individual observations were independent of each other.

8 0

3 years ago

Select the proper order from least to greatest 1/2, 5/6, 2/7, 4/<br> 2

PolarNik [594]

Hello.

the least is 2/7 then 1/2 then 5/6 and the greatest is 4/2

Have a nice day

5 0

4 years ago

Read 2 more answers

16,051 rounded to the nearest thousand

Kaylis [27]

It is 16,000. because 0 is lower than 5

3 0

4 years ago

Jeff can paint 28 sqaure feet every 30 mintues angela can paint 50 square feet every hour who can paint faster,and by how many s

Gnesinka [82]

Answer:

6/1 square feet per hour. Jeff can paint faster.

Step-by-step explanation:

So, to get Jeff's square feet to 60 minutes, you do 30x2= 60. So, you do that to 28. 28x2= 56. 56/1 is greater then 50/1. So 56-50= 6. Jeff can paint 6 square feet per hour, greater than Angela.

Hope this helped!

4 0

4 years ago

Can somebody help me please with both of these questions??

klio [65]

Answer:

The slope is -2

Step-by-step explanation:

m =

y2 - y1

x2 - x1

that's the formula

4 0

3 years ago