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lilavasa [31]
3 years ago
14

In a CBS News survey done in 2009, 95% of n=346 randomly sampled married men said that they would marry their spouse again if th

ey had it to do all over again. In the same survey, 85% of n=522 married women said that they would marry their spouses if they had to do it over again. a. Calculate a 95% confidence interval that estimates the difference in proportions of married women and men who would marry their spouse again if they had it to do all over again. b. On the basis of the confidence interval determined in part a, can we infer that the population proporti
Mathematics
1 answer:
Nitella [24]3 years ago
5 0

Answer:

456

Step-by-step explanation:

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PLEASE ANSWER QUICKLY I WILL GIVE BRAINIEST
ElenaW [278]

Answer:

is the angle of elevation from the boat to the lighthouse.

Step-by-step explanation:

From the boat, the angle through which you will raise your head to see the light house is the angle of elevation, which is .


See graph for the illustration.

The correct answer is A


4 0
3 years ago
Read 2 more answers
A parabola has a vertex at (0,0). The focus of the parabola is located at (4,0). What is the equation of the directrix? x=−4 y=−
rewona [7]

Answer:

Step-by-step explanation:

The vertex and focus are horizon aligned, so the parabola is horizontal and the directrix is a vertical line.

The vertex is halfway between focus and directrix. Directrix: x = -4

7 0
2 years ago
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The square below represents one whole.
grandymaker [24]

Answer:

Fraction: 81/100

Decimal: 0.81

Percentage: 81%

Step-by-step explanation:

The question is complete but the diagram mentioned can be found in

brainly.com/question/12188410

First step is to find the area of the whole square and then the area of the part that was shaded.

From the diagram, there are 100 squares in the whole square. 81 of those squares are shaded.

Area of the whole square = 10 by 10

= 10×10 = 100unit²

Area of shaded region = (10 by 8) + 1

= 80+1 = 81unit²

shaded area expressed as a fraction = 81unit²/100unit²

= 81/100

Shaded area expressed as a decimal = 81/100

You take the number 81 and carry the point by two decimal place from the right

= 0.81

Shaded area expressed as a percent of the whole = (81/100) × 100

= (81×100)/100

= 81%

6 0
2 years ago
A music store is having a sale where you can buy 2 new-release CDs for $15. How much will 7 CDs cost? Use at least 2 ways to sho
Pavlova-9 [17]

Answer: $52.50

Step-by-step explanation:

1 way : 15 divided by 2 then multipy your answer by 7

2nd way : 15x7. Once you get that answer divide it by 2 to get $52.50

7 0
2 years ago
Read 2 more answers
New York City is a popular feild trip destination. This year the senior
lilavasa [31]

Step-by-step explanation: look so if you have

shcool A its 8v+4b=12

and

School B: 12v+4b= 16

since both classes used 4 busses we can use elimination by subtracting the A class Equation from the b class equation to solve from v for its value Then, use either equation and the now found value for v to solve for b.

You should find part of the process to be

12v+4b-(8v+4b)=12-16 which shows the van holds only a few people even before continuing the solution.

Answer -4

5 0
3 years ago
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