According to a study conducted by an​ organization, the proportion of americans who were afraid to fly in 2006 was 0. 10. A random sample of americans results in indicating that they are afraid to fly. Explain why this is not necessarily evidence that the proportion of americans who are afraid to fly has.

The width of two-sided confidence interval decreases as the sample size increases and increases as the confidence level increases.

Confidence interval : In Statistic, confidence interval is a range of estimates for unknown parameters.

The formula for the interval can be expressed as:

Confidence Interval (CI ) = X bar +_ Z( S/√n)

Where,

X bar ---> the sample mean

S ---> the sample standard deviation

n --> the sample size Z---> Z-value which comes from normal distribution

From the formula we can conclude the below points about confidence interval :

So, Confidence interval varies with sample mean, confidence level and standard deviations.

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Answer:

f(- 3) = 16

Step-by-step explanation:

substitute x = - 3 into f(x) , that is

f(- 3) = - 6(- 3) - 2 = 18 - 2 = 16

The value of the expression − || 6c − 16b || + 1 if a = −12, b = 34, and c = −23 is - 681.

We that the modulus always gives a positive quantity.

For example: || -5 || = 5, etc.

We are given;

a = −12, b = 34, and c = −23.

We need to find − || 6c − 16b || + 1.

The solution of an algebraic expression is obtained by substituting the given values in the expression.

Substitute the given value in the above expression, we will get;

− || 6c − 16b || + 1

= − || 6 * -23 − 16 * 34 || + 1

=  − || - 138 − 544 || + 1

= − || - 682 || + 1

= − 682 + 1

= - 681

So, the value of − || 6c − 16b || + 1 is - 681.

Thus, the value of the expression − || 6c − 16b || + 1 if a = −12, b = 34, and c = −23 is - 681.

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From the given statements it was found that statement p is false. So, -3x + 8x - 5x is equal to 0 not x.

In p statement,

-3x + 8x - 5x = x is given.

Let us check it.

-3x + 8x - 5x = 8x - 8x = 0

So, we can say statement p is false.

In q statement,

(3x)(5y) = 15xy is given.

Let us check it.

(3x)(5y) = 15xy

So, we can say statement is q is true.

Therefore, from the given statements it was found that statement p is false. So, -3x + 8x - 5x is equal to 0 not x.

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Answer:

length × width

5×9=45cm²

45cm²×2=90cm²

Tthe total area of the shape is 85 cm².

Rectangle 1:

Length = 9 cm

Width = 5 cm

Area of Rectangle 1 = Length * Width

= 9 cm * 5 cm

= 45 cm²

Rectangle 2:

Length = 8 cm

Width = 5 cm

Area of Rectangle 2 = Length * Width = 8 cm * 5 cm = 40 cm²

Total area of the shape

= Area of Rectangle 1 + Area of Rectangle 2 = 45 cm² + 40 cm²

= 85 cm²

Therefore, the total area of the shape is 85 cm².

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Error free in finding the sum of 2 is 9/30

we need to correct the error and find the sum of 2

= [tex]\frac{5}{6}[/tex]  + ([tex]\frac{-8}{15}[/tex])  

let's find the l.c.m  of both

LCM stands for 'Least Common Multiple'. The least common multiple (LCM) of two numbers is the lowest possible number that can be divisible by both numbers. It can be calculated for two or more numbers as well. There are different methods to find the LCM of a given set of numbers. One of the quickest ways to find the LCM of two numbers is to use the prime factorization of each number and then the product of the highest powers of the common prime factors will be the LCM of those numbers.

= 25 -16 / 30

= 9/30

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Answer:

[tex] \rm \implies \frac{1}{3} (5x - 8) + \frac{2}{3} x \\ \\ \rm \implies \frac{5}{3} x - \frac{8}{3} + \frac{2}{3} x \\ \\ \rm \implies \frac{5x + 2x}{3} - \frac{8}{3} \\ \\ \rm \implies \frac{7x}{3} - \frac{8}{3} \\ \\ \rm \implies 2 \frac{1}{3} x - 2 \frac{2}{3} [/tex]

The answer is in the form of whole number is 6 .

Given,

In the question:

The number is given as:

= [tex]7\frac{1}{2} - 1\frac{1}{2}[/tex]

Now, According to the question:

= [tex]7\frac{1}{2} - 1\frac{1}{2}[/tex]

Convert to fraction into mixed fraction:

= 15/2 - 3/2

Calculate the sum or difference:

= 12/2

Cross out the common factor:

= 6

Hence, The answer is in the form of whole number is 6 .

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Answer:

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Answer: 19.25 quarts of milk the baby drink in 4 weeks.

We know 1 week = 7 days

So, 4 weeks = 4*7 = 28 days.

In 1 day baby drinks = 22 ounce

In 28 days baby drinks = 28*22 = 616 ounce.

1 quarts = 32 ounces.

So, 616 ounce = 616/32 = 19.25 quarts.

Answer:22.75

Step-by-step explanation: 26 x 7 x 4 = 728 ounces in 4 weeks

theres 32 ounces in a quart

so 728 over 32 will equal 22.75

If you pick 25 fruits at random, then 15% of the time, their mean weight will be greater than 665 grams.

In statistics, mean is the ratio of sum of all the observations and total number of observations in a data set.

How to calculate their mean weight will be greater than how many grams?
Given that from the question

Mean = 641 grams

standard deviation 24 grams

If you pick 25 fruits at random, then 15% of the time, their mean weight will be greater than how many grams?

The formula for the calculating the x value in the normal distribution is,

x = μ + zσ

The level of significance is = 15% = 0.15

Therefore,

z = (=normsinv (1 - α))

= (=normsinv (1-0.15))

= (=normsinv(0.85))
= 1.036

The critical value of z is 1.036

z = 1.036

(x - μ) / σ = 1.036

x = μ + 1.036σ

= 641 + 1.036*23

= 641 + 23.828

= 664.828

= 665grams (rounded to the nearest gram)

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Answer:5.08

Step-by-step explanation:

-(x)-(-2)-2(x)-2(-1)=8

-x+2-2x+2=8

-x-2x+2+2=8

-3x+4=8

-3x=8-4

-3x=4

[tex]\frac{-3x}{-3} =\frac{4}{-3} \\x=-\frac{4}{3}[/tex]

Answer:

Yes, because if you fold it in half, both halves match up.

Step-by-step explanation:

You can fold the figure in half along the x-axis to get a "D" shape

The number of elements in the list that are divisible by 10 is 10, 20, 30, 1000, 5000, 60000, etc.

Given:

the number of elements in the list that are divisible by 10. (hint: the number x is divisible by 10 if x % 10 is 0.) div ten

The number is divisible by 10 and the last digit is zero.

suppose take 10:

= 10/10 = 1

It is divisible.

= 10%10

The last digit or remainder is zero.

Therefore the number of elements in the list that are divisible by 10 is 10, 20, 30, 1000, 5000, 60000, etc.

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16

Step-by-step explanation:

[34-16-12]

[18-12]

16

Answer:vvvvvvvvvvvvvvvvvv55555

Step-by-step explanation:

The equation representing the cost of the canoe rental company is given by y = 30x + 20 .

Let the total cost for renting a canoe be y.

Let the canoe is being rent for x hours.

now the cost for renting the canoe at 30 dollars per hour = 30x

Total cost of renting the canoe = 30x + 20

But the total cost is y.

Hence the equation to represent this situation is given by

y = 30x + 20 which is a straight line of the form y = mx +c, where the slope is 30 and the y-intercept is 20.

Now we will plot the graph for this equation.

At x = 0 , y = 20

At x = 1 , y = 50

At x= -3 , y = -70

Hence the graph of the line passes through these points on the cartesian plane.

The graph of the line is attached below.

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The height of the object at the time t = 1 second is given by 1174 feet.

Given the height of tower is 1190 feet.

The height of the object at time t seconds is given by,

h(t) = [tex]-16t^2[/tex] + 1190

So the height of the object after time t = 1 second is given by,

h(1) = [tex]-16\times 1^2+1190[/tex] = -16 + 1190 = 1174 feet

Hence the height of the object at the time t = 1 second is 1174 feet.

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Answer:

[tex]x=9[/tex]

Step-by-step explanation:

First, let's determine the slope! We know that the line is perpendicular to [tex]y=4[/tex]. This line is just a horizontal line that crosses the y-axis with a slope of 0. The line perpendicular to this will have the form [tex]x=?[/tex]. This is a straight, vertical line with indeterminate slope.

The line passes through the point (9, 12). If the line is going straight up and down, it will intercept every y-value, but only one x-value. The x-value in this ordered pair is 9. Therefore, the equation of the line is [tex]x=9[/tex].

The slope of the line is 1/5 and it means the each headband uses 1/5 yards of fabrics

First choose two points

The first point = (3, 3/5)

The second point = (5, 1)

The slope of the line is the change in y coordinate with respect to the change in x coordinate of the line

The slope of the line = [tex]\frac{y_2-y_1}{x_2-x_1}[/tex]

Where [tex](x_1,y_1)[/tex] is the coordinates of the first point

[tex](x_2,y_2)[/tex] is the coordinates of the second point

Substitute the values in the equation

The slope of the line = (1- 3/5) / (5 -3)

= (2/5) / 2

= 1/5 yards per headband

Hence, the slope of the line is 1/5 and it means the each headband uses 1/5 yards of fabrics

The complete question is

The table shows the amount of fabric Camille used based on the number of headbands that she made. Find the slope, and explain what it means in the context of the situation.

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The amount that the painter will charge is $519.75.

From the information illustrated, the painter can paint 175 square feet per hour and she charges $0.54 per square foot and then paints for 5.5 hours.

The amount that she will charge will be:

= Number of square foot × Amount charged × Number of hours

= 175 × $0.54 × 5.5

= $519.75

The amount is $519.75.

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The resulting dilation of the figure with the scale factor of 3/4 is given by the graph at the end of the answer.

Dilation on a image

Dilation in a image means multiply the coordinates of each vertex of the figure by the scale factors.

Given,

Here we have the triangle in the given figure.

Now, we have to find the dilation of the figure with the scale factor of 3/4.

Here from the original figure graph, the vertices are obtained as follows:

S(-8,-4), T(4, -4) and U(4,8)

Now we have to use the dilation scale factor of 3/4,

Which means that the coordinates are multiplied by 3/4,

Then the new coordinates of the resulting image are given as follows:

S(-8, -4) => ((-8 x 3/4), (-4,3/4)) => S'(-6, -3)

T(4, -4) => ((4 x 3/4), (-4,3/4)) => T'(3, -3)

U(8, 4) => ((8 x 3/4), (4,3/4)) => U'(6, 3)

Now, we have to plot these new coordinates on the graph, then we get,

the graph like the following.

Here the dilated figure is given by the graph at the end of the answer, having the same format as the original figure, just with smaller side lengths due to the dilation with a scale factor less than 1.

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Answer:

G is correct.

Step-by-step explanation:

[tex] - 2 + 4(5) = - 2 + 20 = 18[/tex]

[tex] - 3( - 2) + 2(5) = 6 + 10 = 16[/tex]

So G (-2, 5) is correct.

The volume of the largest right cylinder that fits in a sphere of radius 4 units is 143 m².

Let the diameter of the cylinder be “d" and the height of the cylinder be “h".

Given radius of the sphere = r = 4m

Diameter of the sphere = d = 2r = 2×4 = 08 m

As the cylinder is inscribed in the sphere

Therefore, the diameter of the cylinder be “d" is equal to the height of the cylinder be “h".

i.e, d = h

By Pythagoras Theorem, In triangle ABC

AB²+BC²=AC²

Or, d²+h² = (8)²

Or, h²+h² = 64

Or, 2h² = 64

Or, h² = 64/2

Or, h = √32

And d =√32

Or, r = d/2

       = √32/2 =16/√32

Or, r = 16/√32

Volume of the cylinder = πr²h

                                       =22/7 × (16/√32 )² × √32

                                       = 22/ 7 × 8 ×√32

                                       = 142.229

Rounding up the value 142.229 in 143 m³

Therefore, the largest volume of the cylinder = 143 m³

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The number of days that it take Olivia to collect at least 54 1/3 cups of sugar is 12 days.

Inequalities are created through the connection of two expressions. It should be noted that the expressions in an inequality aren't always equal. They are denoted by the symbols ≥ < > ≤.

In this case, Olivia needs to gather at least 54 1/3 cups of sugar.

The expression will be illustrated thus:

15 2/3 + 3 1/3d ≥ 54 1/3

Collect like terms

3 1/3d ≥ 54 1/3 - 15 2/3

3 1/3d ≥ 38 2/3

Divide

d ≥ 38 2/3 ÷ 3 1/3

d ≥ (116 / 3 × 3/10)

d ≥ 11 3/5

She needs 12 days.

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4.8 inches is the height of a trapezoid with an area of 24 square inches if the two bases measure 4 inches and 6 inches.

Using the formula for the area of a trapezoid, which is:

Area = (1/2)(b1 + b2)h

In this formula, b1 and b2 are the lengths of the two bases of the trapezoid, and h is the height of the trapezoid. In our problem, we know that the area is 24 square inches, and the lengths of the two bases are 4 inches and 6 inches. We want to solve for h, the height of the trapezoid.

Plugging in the known values, we get:

24 = (1/2)(4 + 6)h

24 = (1/2)(10)h

24 = 5h

4.8 = h

Therefore, the height of the trapezoid is 4.8 inches.

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The number of ways of selecting a committees of 5 members from  a group of 10 people will be 252

Combination is a method to calculate different ways to select items from a set / group regardless of the order.

ⁿCₓ = n! / (n-x)! x!

Total number of people in group is 10

Number of people require to form committee is 5

By using Combination ,

¹⁰C₅ = 10! / (10 - 5 )! 5!

= 10×9×8×7×6×5! / 5! × 5!

Cancelling 5! from numerator and denominator

= 10×9×8×7×6 / 5!

expanding the factorial

= 10×9×8×7×6 / 5×4×3×2×1

= 252

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