To estimate the mean height of female high school juniors, you take a

random sample of 30 female students and get these results (in inches):

72,51, 67, 68, 61, 69, 58, 56, 60, 56

66, 61, 60, 59, 59, 54, 58, 53, 68, 63

57, 62, 63, 64, 56, 62, 58, 67, 57, 70


If the o is 5.3, based on past research, and you want to construct a 97%

confidence interval using (estimate) + (margin of error)= (estimate)

what's your point estimate of ?

A. 30

B. 5.4

C. 65

D. 61.17

Answer:

23.2wx - 13.2w

Step-by-step explanation:

4w (5.8x - 3.3) =

4w * 5.8x - 4w * 3.3 = distribute 4w to 5.8x and 3.3

4 * 5.8 *w * x - 4w * 3.3 =

23.2 * w * x - 13.2w  ==> simplify

23.2wx - 13.2w

Answer:

60

Step-by-step explanation:

10 x 6 = 60

Hope this helped! :)

Answer:

x=3 bracelets

Step-by-step explanation:

5(X)+2(12)=39

5X=39-24

5X=15

X=3

The total time taken for the entire journey is 2.8 hours.

To calculate the total time taken for the entire journey, we can use the formula:

Time = Distance / Speed

For the first part of the journey, the car travels a distance of 112 km at an average speed of 70 km/h. Using the formula, the time taken for this part is:

Time1 = 112 km / 70 km/h = 1.6 hours

For the second part of the journey, the car travels a further distance of 60 km at an average speed of 50 km/h. Again, using the formula, the time taken for this part is:

Time2 = 60 km / 50 km/h = 1.2 hours

To find the total time for the entire journey, we sum up the times for both parts:

Total Time = Time1 + Time2 = 1.6 hours + 1.2 hours = 2.8 hours

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Answer:

327

Step-by-step explanation:

To calculate how much Francisca and Elizabeth will raise together, we need to know how many laps or miles they walked. Unfortunately, the problem doesn't provide us with that information.

However, we can calculate how much each girl will raise individually.

Francisca will walk for 3 hours which is equal to 6 half-hours. She raises $25.50 every half-hour so she will raise:

$25.50 x 6 = $153

Elizabeth will walk for 3 hours which is equal to 12 quarter-hours. She raises $14.50 every quarter-hour so she will raise:

$14.50 x 12 = $174

Therefore, Francisca and Elizabeth will raise a total of:

$153 + $174 = $327

Answer:

96.25%

Step-by-step explanation:

The empirical rule regarding mean and standard deviation is that

Therefore between mean and +2 standard deviation or between mean and -2 standard deviation you will find  approximately 95/2 = 47.5% of the values

Between mean and ± 3 standard deviations you will find approximately 97.5/2 = 48.75% of the values

Therefore between 2 standard deviations above and 3 standard deviations below you will find approximately 47.5 + 48.75 = 96.25% of values

Answer:

The answer is 1/50

Step-by-step explanation:

The solution set includes all real numbers less than -5, and all real numbers greater than 1, but does not include -5 or 1 themselves.

Option D is the correct answer.

We have,

We need to isolate the absolute value |x + 2| on one side of the inequality.

We subtract 7 from both sides.

|x + 2| > 3

Next, we can split this inequality into two separate inequalities, one for when the expression inside the absolute value is positive, and one for when it is negative:

x + 2 > 3

or

- (x + 2) > 3

Solving for x in the first inequality.

x > 1

Solving for x in the second inequality.

-x - 2 > 3

Adding 2 to both sides and multiplying by -1.

x < -5

So the solution set for the inequality |x + 2| + 7 > 10 is the set of all x-values that satisfy either x > 1 or x < -5.

Using interval notation.

(-∞, -5) U (1, ∞)

Thus,

The solution set includes all real numbers less than -5, and all real numbers greater than 1, but does not include -5 or 1 themselves.

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Answer:

The parabola is translated down 2 units.

Step-by-step explanation:

You have the parabola f(x) = 2x² – 5x + 3

To change this parabola to f(x) = 2x² - 5x + 1, you must have performed the following calculation:

f(x) = 2x² – 5x + 3 -2= 2x² - 5x + 1  Expresion A

The algebraic expression of the parabola that results from translating the parabola f (x) = ax² horizontally and vertically is g (x) = a(x - p)² + q, translating in the same way as the function.

In the expression A it can be observed then that q = -2 and is less than 0. So the displacement is down 2 units.

This can also be seen graphically, in the attached image, where the red parabola corresponds to the function f(x) = 2x² – 5x + 3 and the blue one to the parabola f(x) = 2x² – 5x + 1.

In conclusion, the parabola is translated down 2 units.

Answer:

63

Step-by-step explanation:

Mode is the number that is repeated the most, in this case its 63

Answer:

Step-by-step explanation:

The approximate amount of rotations it would take the monster truck to travel one mile is 1260 rotations.

Now, Based on the tire experiment, it will take fewer rotations for a monster truck with 6ft (which is 72 inches) tires to travel one mile compared to the other 3 tires from before.

This is because larger tires have a greater circumference, which means they are able to cover more distance with each rotation.

Hence, For calculate the approximate amount of rotations it would take the monster truck to travel one mile, we need to use the formula:

Number of rotations = Distance traveled / Circumference of the tire

Since the distance traveled is one mile, which is equal to 5280 feet, we need to convert the tire diameter from feet to inches, and then calculate the circumference:

Hence, We get;

Circumference = π x Diameter Circumference

                        = 3.14 x 72 Circumference

                        = 226.08 inches

Now, we can calculate the number of rotations:

Number of rotations = 5280 feet / (12 inches/foot x 226.08 inches/rotation)

Number of rotations = 5280 / 2712.96

Number of rotations ≈ 1.947 rotations

or ≈ 1260 rotations per mile

Therefore, the approximate amount of rotations it would take the monster truck to travel one mile is 1260 rotations.

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First, you have 232 people in mind but 15 do not make the trip, So, the number of people that made the trip was:

232 - 15 = 217

On the other hand, 75 double rooms were rented and there are 2 people in every room, so the number of people for the double rooms are:

2*75 = 150

Now, if 217 people made the trip and 150 were double rooms, then, the number of single rooms that were rented was:

217 - 150 = 67

Because there is 1 person in every single room.

Finally the total amount of the trip was:

$780*150 + $865*67 = $117,000 + $57,955 = $174,955

Because there were 150 people in a double room and 67 people in a single room.

Answers: 67 single rooms

$174,955

785.4 cubic feet

Step 1: Start by calculating the area of the base of the storage tank. The area of a circle is calculated by: A = π*r², where r is the radius of the circle.

Step 2: For Emma’s cylindrical storage tank, the radius of the base is 5 feet. Substitute this value in the formula and calculate the area of the base, which is equal to: A = π*5² = 78.54 square feet.

Step 3: Now we need to calculate the volume of the cylindrical storage tank. The volume of a cylinder is calculated by: V = π*r²*h, where r is the radius of the circle and h is the height of the cylinder. For Emma’s tank, the height is 10 feet. Substitute these values in the formula and calculate the volume, which is equal to: V = π*5²*10 = 785.4 cubic feet.

Step 4: Therefore, Emma’s cylindrical storage tank has a capacity of 785.4 cubic feet.

If you have any additional questions or need further assistance, please let me know.

Answer:

Only sequence B

Step-by-step explanation:

Got the answer from Khan Academy.

A translation 6 units to the right and 6 units up, then a 180° rotation about point B. The correct option is B.

The process of changing the location of the image on the coordinate system will be known as the translation. Each point in a figure is moved the same distance in the same direction using a type of transformation known as translation.

It is given that triangles XYZ and ABC are congruent. The side length of each square on the grid is 1 unit.

In the figure, we can see the translation 6 units to the right and 6 units up, then a 180° rotation about point B.

Therefore, the translation is 6 units to the right and 6 units up, then a 180° rotation about point B. The correct option is B.

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a) Mean = 1127 ; Standard deviation = 5.56

b) The county result is unusually high.

Since it aids in comprehending observations when the data is scattered, standard deviation is significant. A standard deviation of the sample would be higher the more evenly dispersed the data is.

Problems of normally distributed samples can be solved using the z-score formula.

After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X. Subtracting 1 by the pvalue, we This p-value is the probability that the value of the measure is greater than X.

(a) Find the mean and standard deviation for the number of high school graduates in groups of 1380 Americans over the age of 25.

This first question is a binomial probability distribution.

We have a sample of 1380 Americans, so .

The mean of the sample is 1127.

The probability of a success is \(= \frac{1127}{1380}=0.8167\)

The standard deviation of the sample is

\(\sqrt{1380*0.8167*0.1833}\) = 5.56

(b) Standard deviation

The national mean is 82%. So,

82%(1380)=1131.6

\(=\frac{1127-1131}{5.56}=0.827\)

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Based on the limited information provided, it is not possible to definitively determine the type of economy in Country A. More specific details and factors would be necessary to make a conclusive determination.

Answer:

3.25%

Step-by-step explanation:

4000XxX9 =585

100X2

The annual rate of interest if the interest amount of $585 will be 3.25%.

Simple interest is the concept that is used in many companies such as banking, finance, automobile, and so on.

The interest is given as

I = (P × R × T) / 100

Where, P is the initial amount, R is simple interest rate, and T is the time.

Jack borrowed $4000.00 and paid $585.00 in simple interest from after 4 years six months.

4 years six months = 4.5 years

Then the interest rate will be

585 = (4000 × R × 4.5) / 100

   R = 585 /(40 x 4.5)

   R = 3.25%

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The linear equation for the 24 is less than m is 24 = m - 8 here m is the number.

It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.

If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.

It is given that a linear equation in one variable:

24 is less than m:

Here m is the number:

24 = m - 8

Where m is the number.

Thus, the linear equation for the 24 is less than m is 24 = m - 8 where m is the number.

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Answer:

After factoring, to find the solutions of a quadratic equation, we have to apply the Zero Product rule by setting each of the factors to zero and solving for the variable.

The solutions of the given equation is x = 4 and x = -1

Explanation:

Given the below quadratic equation;

The first step to solving the above is to look for two factors of -4 whose sum will give -3. These numbers are -4 and 1. So let's go ahead and replace the middle term with these two factors as shown below;

The 2nd step is to factorize;

The 3rd step is to apply the Zero Product Rule, by setting each factor to zero and solving for x;

SOLUTION

Given the question in the image, the following are the solution steps to answer the question.

STEP 1: Write the given equation

To get the intercepts, we pick a point and equate the others to zero and then solve for the point.

STEP 2: Get the values of x when y and z are zeroes

STEP 3: Get the values of y when x and z are zeroes

STEP 4: Get the value of z when x and y are zeroes

Hence, the intercepts are:

Answer:

With a 90 percent confidence interval, you have a 10 percent chance of being wrong.--

Step-by-step explanation:

think it helps

have a nice night

Answer:

5001

PewDiePie

both!!

rblx, since there r similar games like mincraft in it lol

Answer:I want brainlest,5001 SUPA HARD pewdiepie (i subed)

I prefer minecraft i like both

Step-by-step explanation:

Not sure if thats what u wanted lol :D

The turning points of the function y = x³ - 3x² - 9x + 4 are (3, -23) and (-1, 9).

To determine the turning points of the given function y = x³ - 3x² - 9x + 4, we need to find the critical points where the derivative of the function is equal to zero.

1. Find the derivative of the function:

  y' = 3x² - 6x - 9

2. Set the derivative equal to zero and solve for x:

  3x² - 6x - 9 = 0

3. Factorize the quadratic equation:

  3(x² - 2x - 3) = 0

4. Solve the quadratic equation by factoring or using the quadratic formula:

  (x - 3)(x + 1) = 0

  This gives us two possible values for x: x = 3 and x = -1.

5. Substitute these critical points back into the original function to find the corresponding y-values:

  For x = 3:

  y = (3)³ - 3(3)² - 9(3) + 4

    = 27 - 27 - 27 + 4

    = -23

  For x = -1:

  y = (-1)³ - 3(-1)² - 9(-1) + 4

    = -1 - 3 + 9 + 4

    = 9

6. Therefore, the turning points are (3, -23) and (-1, 9).

Note: It appears that there was a typo in the original equation, where the term "-9x" should have been "-3x²". The above solution assumes the corrected equation.

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Answer:

7.02 x 10^1

Step-by-step explanation:

Answer:

7.02 * 10^1

Step-by-step explanation:

Answer:

$1400

Step-by-step explanation:

350 x 2 = 700 x 2 = $1400

Answer:

C. 160 minutes

Step-by-step explanation:

The calculation to be made will be to process 20 students

We have, according to the exercise, the following data:

For process 1: Registration table, Number of servers = 1, Time spent = 2 minutes

For process 2: cashier, number of servers = 3, time spent = 10 minutes

For process 3: ID processing station, number of servers = 4, time spent = 20 minutes

Demand rate = 0.125

To solve it, we will look for the capacity that the server has of the previously mentioned processes, calculating the following:

Capacity = Number of students served per minute

We can say that at the registration table we observe:

Time needed to serve 1 student = 2 minutes

Capacity = 0.5 students per minute

With the cashier we analyze the following:

Time needed to serve 1 student = 10 minutes

Number of servers = 3

Capacity = 0.3 students per minute

ID processing station

Time needed to serve 1 student = 20 minutes

Number of servers = 4

Capacity = 0.2 students per minute

When comparing the processes, it is definitely found that the bottleneck is the ID processing station, where it takes more time to serve a student, which leads us to infer that the capacity of the process is comparable to the capacity of the process bottleneck

Process capacity = 0.2 students per minute

Given, demand rate = 0.125 students per minute

We observe that the demand rate is less than the capacity of the process, therefore we can infer that the number of students served during each minute is the same as the demand rate.

In this way we find that:

Number of students served per minute = 0.125

Time needed to serve 1 student = 1 / 0.125 = 8 minutes

Time needed to serve 20 students = 8 x 20 = 160 minutes.

We conclude that the answer is that it will take 160 minutes to serve 20 students.

.

Answer:

C) 160 minutes

Explanation:

Given:

Time spent at registration desk = 2mins

Time spent at the cashier = 10 mins

Time spent at the ID processing station = 20 mins

Number of registration desk = 1

Number of cashiers = 3

Number of ID processing stations = 4

Let's calculate the capacity of each process using the expression: number of agents / process time

Therefore,

Capacity of registration desk =

\( \frac{1}{2} = 0.5 students per min\)

Capacity of cashiers =

\( \frac{3}{10} = 0.3 students per min \)

Capacity of ID processing stations =

\( \frac{4}{20} = 0.2 students per min\)

The process capacity is equal to the bottleneck process. Here, the bottleneck process is the process with the longest time per minute which is the ID processing station.

Therefore, given a rate of 0.125 student per min and Process capacity of 0.2 student per min, we'll take 0.125 as the number of students per minute since it is lower than the process capacity.

Therefore, time taken to serve one student = \( \frac{1}{0.125} = 8mins \)

Time taken to serve 20 students would be = 20 * 8 = 160 minutes

The elements of the sets  A ∩ (B ∪ C) is  {b, c, i}.

A universal set (U) is a set which has elements of all the related sets, without any repetition of elements.

Therefore,

U = {a, b, ….. i, j}

A = {b, c, i, j}

B = {a, c, g, i}

C = {a, b, d, i}

Therefore, let's find the elements A ∩ (B ∪ C).

Hence,

(B ∪ C) = {a, b, c, d, i, g}

A =  {b, c, i, j}

Finally,

A ∩ (B ∪ C). = {b, c, i}

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Answer: If the X is a multiplication symbol then it would be 75

Step-by-step explanation:

10(3^2)−(3)(3)−6

=(10)(9)−(3)(3)−6

=90−(3)(3)−6

=90−9−6

=81−6

=75

Answer:

100x2/3-3x/3-6

Step-by-step explanation:

Answer:

b)f(n)=4n+16

Step-by-step explanation:

if n=1

substitute 1 for n in the equation

f(1)=4(1)+16

=4+16

=20

f(2)=4(2)+16

=8+16

=24

And so on