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SVETLANKA909090 [29]
4 years ago
14

In a recent poll^1 of 1000 American adults, the number saying that exercise is an important part of daily life was 753. Use stra

tegy or other technology to find a 90% confidence interval for the proportion of American adults who think exercise is an important part of daily life. The 90% confidence interval is_______________.
Mathematics
1 answer:
Annette [7]4 years ago
8 0

Answer:

The 90% confidence interval is between a lower limit of 0.7306 and an upper limit of 0.7754.

Step-by-step explanation:

Confidence interval for a proportion is given as p +/- margin of error (E)

p is sample proportion = 753/1000 = 0.753

n is sample size = 1000

confidence level = 90%

critical value corresponding to 90% confidence level and infinity degree of freedom is 1.645

E = critical value×sqrt[p(1-p) ÷ n] = 1.645×sqrt[0.753(1-0.753) ÷ 1000] = 1.645×sqrt[1.85991×10^-4] = 1.645×0.0136 = 0.0224

Lower limit of proportion = p - E = 0.753 - 0.0224 = 0.7306

Upper limit of proportion = p + E = 0.753 + 0.0224 = 0.7754

90% confidence interval is (0.7306, 0.7754)

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Y^2 - X when X = 6 and Y = 11
inn [45]

Answer:

Answer is below

Step-by-step explanation:

Evaluate for x=6,y=11

11^2-6\\11^{2} -6\\=115

So therefore your answer is 115

6 0
4 years ago
Read 2 more answers
Please help I will reward brainly! Need done ASAP
hoa [83]
Fort Sumter, Battle of Bull Run, <span>Battle of Shiloh, Battle of Vicksburg and Battle of </span>Gettysburg
6 0
4 years ago
Solve for F.<br> 3(6-f)-4=3f-4
Alinara [238K]

Answer:

F=3

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

3(6−f)−4=3f−4

(3)(6)+(3)(−f)+−4=3f+−4(Distribute)

18+−3f+−4=3f+−4

(−3f)+(18+−4)=3f−4(Combine Like Terms)

−3f+14=3f−4

−3f+14=3f−4

Step 2: Subtract 3f from both sides.

−3f+14−3f=3f−4−3f

−6f+14=−4

Step 3: Subtract 14 from both sides.

−6f+14−14=−4−14

−6f=−18

Step 4: Divide both sides by -6.

−6f−6=−18−6f=3

Answer:

f=3

7 0
3 years ago
Sets L, M, and N are shown. Which of the sets represents LU (M n N) (the union of L with the intersection of sets
irinina [24]

The sets represents L ∪ (M ∩ N) is {0 , 10 , 20 , 40 , 80 , 100} ⇒ 2nd answer

Step-by-step explanation:

In the sets:

  • Union (∪) of two sets means all the elements in the two sets without repeating the same elements
  • Intersection (∩) of two sets means the common elements in the two sets

∵ Set L = {0 , 20 , 40 , 80 , 100}

∵ Set M = {5 , 10 , 15 , 20 , 25}

∵ Set N = {10 , 20 , 30 , 40 , 50}

We need to find L ∪ (M ∩ N)

At first find (M ∩ N)

∵ M ∩ N means find the common elements of M and N

∵ 10 and 20 are common elements in M and N

∴ M ∩ N = {10 , 20}

Now find the union of L and {10 , 20}

∵ L ∪ {10 , 20} means all elements in L and {10 , 20} without

   repeating the same elements

∴ L ∪ {10 , 20} = {0 , 10 , 20 , 40 , 80 , 100}

∴ L ∪ (M ∩ N) = {0 , 10 , 20 , 40 , 80 , 100}

The sets represents L ∪ (M ∩ N) is {0 , 10 , 20 , 40 , 80 , 100}

Learn more:

You can learn more about the set in brainly.com/question/10710410

#LearnwithBrainly

4 0
4 years ago
For an investment of $26,245, a quarterly statement reports that the account balance is $26,292. The statement also reports that
olya-2409 [2.1K]
52,537.02 is your answer i hope i helped
6 0
3 years ago
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