HELP 1+1 I will give 30 points enjoy your 30 points but get it right please

Percentage of data within 2 population standard deviations of the mean is 68%.

To calculate the percentage of data within two population standard deviations of the mean, we need to first find the mean and standard deviation of the data set.

The mean can be found by summing all the values and dividing by the total number of values:

Mean = (20*2 + 22*8 + 28*9 + 34*13 + 38*16 + 39*11 + 41*7 + 48*0)/(2+8+9+13+16+11+7) = 32.68

To calculate standard deviation, we need to calculate the variance first. Variance is the average of the squared differences from the mean.

Variance = [(20-32.68)^2*2 + (22-32.68)^2*8 + (28-32.68)^2*9 + (34-32.68)^2*13 + (38-32.68)^2*16 + (39-32.68)^2*11 + (41-32.68)^2*7]/(2+8+9+13+16+11+7-1) = 139.98

Standard Deviation = sqrt(139.98) = 11.83

Now we can calculate the range within two population standard deviations of the mean. Two population standard deviations of the mean can be found by multiplying the standard deviation by 2.

Range = 2*11.83 = 23.66

The minimum value within two population standard deviations of the mean can be found by subtracting the range from the mean and the maximum value can be found by adding the range to the mean:

Minimum Value = 32.68 - 23.66 = 9.02 Maximum Value = 32.68 + 23.66 = 56.34

Now we can count the number of data points within this range, which are 45 out of 66 data points. To find the percentage, we divide 45 by 66 and multiply by 100:

Percentage of data within 2 population standard deviations of the mean = (45/66)*100 = 68% (rounded to the nearest percent).

Therefore, approximately 68% of the data falls within two population standard deviations of the mean.

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Answer:

angle A is 53

side AC is 0.2

bc= 0.25

Step-by-step explanation:

180-90-37= 53

AC= sin(37)= 3/x

BC=tan(37)=3/x

The only point where the tangent line is vertical is (0, 0)..

To find the points on the curve where the tangent line is horizontal or vertical, we need to find where the slope of the tangent line is zero (for a horizontal tangent line) or undefined (for a vertical tangent line). The slope of the tangent line is given by the derivative of y with respect to x, dy/dx:

dy/dx = (dy/dt)/(dx/dt) = (3t^2 - 6t)/(3t^2 - 3)

Setting the numerator equal to zero, we get:

3t^2 - 6t = 0

Factorizing, we get:

3t(t - 2) = 0

So the critical points are t = 0 and t = 2.

At t = 0, we have x = 0 and y = 0, so the point is (0, 0).

At t = 2, we have x = 2 and y = -8, so the point is (2, -8).

To determine if the tangent line is vertical or horizontal at each point, we need to look at the derivative dx/dt:

dx/dt = 3t^2 - 3

At t = 0, dx/dt = -3, which means the tangent line is vertical.

At t = 2, dx/dt = 9, which means the tangent line is not vertical.

To find out if the tangent line is horizontal at t = 2, we can look at the derivative of dy/dt:

dy/dt = 9t^2 - 6t

At t = 2, dy/dt = 24, which means the tangent line is not horizontal.

Therefore, the only point where the tangent line is vertical is (0, 0).

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Answer:

27*10⁵ is basically 270000.

Altitude and perpendicular bisector of a side are always perpendicular to a side of a triangle.

How do triangles work?

A triangle is a three-sided polygon with three vertices. The angles of the triangle are formed by the three sides' end-to-end connections at a point.

               The triangle's three angles add up to a total of 180 degrees.

In a triangle, what is the altitude?

The perpendicular line drawn from a triangle's vertex to its opposite side is the definition of a triangle's altitude.

                       The altitude forms a right-angle triangle with the base and is also referred to as the triangle's height.

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Answer:

16 ounces = 1 pint, 8 times 2 = 16

Step-by-step explanation:

Answer in explanation:

1 pint is 16 ounces so he could make 2 batches of lemonade with 1 pint of lemon juice.

(8 x 2 = 16

your answer is 2

Hope this helps!

Answer:

x=2

Step-by-step explanation:

2x+2=x+4

subtract 2 from both sides

2x=x+2

And subtract 1x from both sides

x=2

Answer:

1a. four minus n, four subtracted by n

1b. t over 5, t divided by five

1c. nine plus q, the sum of nine plus q

1d. three times h, h times three

Answer:

1a. four minus n, n minus four

1b. t divided five, a number t is divided by five

1c. nine plus q, q plus nine

1d. three times h, three times a number h

Step-by-step explanation:

hope this helps have a safe and happy holiday

Answer: About 100 more people will choose brand A.

Step-by-step explanation:

Number of people who chose brand A = 25

Number of people who chose brand B = 15

Number of people who chose brand C = 10

Total number of people = 25+10+15 = 50

Since there are 200 people left, we'll equate them based on the data given and this will be:

For A = 25/50 × 200 = 100

For B = 15/50 × 200 = 60

For C = 10/50 × 200 = 40

Therefore, about 100 more people will choose brand A.

Answer:

About 100 more people will choose brand A

Step-by-step explanation:

i ready:)

Answer:

Step-by-step explanation:

Full volume is:

Volume of tea required:

The statement that describes the graph of y-√√-4x-36 compared to the parent square root function is: d. stretched by a factor of 2, reflected over the y-axis, and translated 9 units left

Stretch by a factor of 2: Multiply the input of the function by 2. The new function is f(2x).

Reflect over the y-axis: Negate the output of the function. The new function is -f(2x).

Translate 9 units left: Subtract 9 from the input of the function. The new function is -f(2x - 9). So if you have an original function f(x) the transformed function would be -f(2x - 9).

Therefore the correct option is d.

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Answer:

there aren't any options. but quadrant four would have a (x,-y) set up. positive x-values, but negative y-values.

Answer:

no habla espanol

Step-by-step explanation:

In the next generation, the observed genotype frequencies in these two populations will differ due to random genetic drift. The smaller population is more susceptible to the effects of genetic drift.

Genetic drift is a random process that can lead to changes in allele frequencies over time in a population. It is particularly impactful in small populations where chance events can have a larger effect. In the given scenario, the population with 50 individuals is significantly smaller compared to the population with 10,000 individuals.

Due to the effects of genetic drift, the observed genotype frequencies in the next generation will likely differ between the two populations. The smaller population is more prone to fluctuations in allele frequencies, resulting in greater variability in genotype frequencies. In contrast, the larger population is less affected by genetic drift and is more likely to maintain relatively stable genotype frequencies.

It's important to note that genetic drift is a random process, and while we can make predictions based on population size and initial allele frequencies, the actual outcomes may still vary. Therefore, the observed genotype frequencies in the next generation will be subject to chance and random fluctuations driven by genetic drift.

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Answer:

48 ounces

Step-by-step explanation:

x = small jar

y = large jar

x= 0.75y

36= 0.75y

y = 48

Answer:

the answer is 48 ounces  i took that on my test I'm positive

Step-by-step explanation:

Answer:

\(x =\) 1 3/5

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

Exact form:

\(x = 8/5\)

Decimal Form:

\(x = 1.6\)

Mixed Number Form:

\(x =\) 1 3/5

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The statement that research reveals that emotional people tend to be more satisfied with their jobs, committed to their employer, and produce more work than conscientious individuals is false.

Emotional people can be described as one that are usually loyal to their feelings which usually make them not to be strong when it comes  to  those things that are logical  around  them  .

It should be noted that these set of people can not be regarfed as those that would produce more work than conscientious individuals.

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(x+2)(x-3)(x+5)

Step-by-step explanation:

Answer:

(x+2) (x-3) (x+5)

Step-by-step explanation:

Factor the polynomial using the rational roots theorem

Answer:

3 (x -7) + 20 = 12+2 (x -3)

x = 7

There is enough proof to indicate that the percentage of newsletter readers who possess a Rolls Royce is less than 69%.

The null hypothesis is that p = 0.69, meaning that 69% of the newsletter readers own a Rolls Royce. The alternative hypothesis is that p < 0.69, meaning that less than 69% of the newsletter readers own a Rolls Royce.

We can use a one-tailed z-test to test the hypothesis. Assuming a sample size of n = 100, if we observe fewer than 69 Rolls Royces in our sample, we can reject the null hypothesis.

Using a z-test, we can calculate the z-score by using the formula:

z = (p' - p) / sqrt(p * (1 - p) / n)

where p' is the sample proportion, p is the hypothesized proportion, and n is the sample size.

At a significance level of 0.10, the critical z-value is -1.28. If the calculated z-score is less than -1.28, we can reject the null hypothesis.

If we conduct a survey of 100 newsletter readers and find that 58 of them own a Rolls Royce, the sample proportion would be p' = 0.58. Calculating the z-score, we get:

z = (0.58 - 0.69) / sqrt(0.69 * 0.31 / 100) = -1.83

Since -1.83 is less than -1.28, we can reject the null hypothesis and conclude that there is sufficient evidence to suggest that fewer than 69% of the newsletter readers own a Rolls Royce.

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The finite population correction factor is used in computing the standard error of the sample mean when the sample size is smaller than 5% of the population size.

The finite population correction factor is a adjustment made to the standard error of the sample mean when the sample is taken from a finite population, rather than an infinite population.

It accounts for the fact that sampling without replacement affects the variability of the sample mean.

When the sample size is relatively large compared to the population size (more than half), the effect of sampling without replacement becomes negligible, and the finite population correction factor is not necessary.

In this case, the standard error of the sample mean can be estimated using the formula for sampling with replacement.

On the other hand, when the sample size is small relative to the population size (less than 5%), the effect of sampling without replacement becomes more pronounced, and the finite population correction factor should be applied.

This correction adjusts the standard error to account for the finite population size and provides a more accurate estimate of the variability of the sample mean.

Therefore, the correct answer is option 2: the finite population correction factor is used when the sample size is smaller than 5% of the population size.

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we can conclude that only about 2.28% of vehicles in Santa Clara are more than 6 years old, based on the given average age and standard deviation of the vehicle age distribution.

To answer this question, we can use the standard normal distribution table or a calculator to find the area under the standard normal distribution curve for the given probability. To do this, we need to standardize the variable of interest, which in this case is the age of the vehicle, into a standard normal variable with a mean of 0 and a standard deviation of 1. To standardize the variable of interest, we can use the formula

z = (x - mu) / sigma

where z is the standardized variable, x is the age of the vehicle, mu is the mean age of the vehicle (9 years), and sigma is the standard deviation of the vehicle age (18 months, or 1.5 years).

To find the percentage of vehicles that are more than 6 years old, we need to find the area under the standard normal distribution curve to the left of the standardized variable z = (6 - 9) / 1.5 = -2.

Using a standard normal distribution table or calculator, we can find that the area to the left of z = -2 is approximately 0.0228. This means that the percentage of vehicles that are more than 6 years old is approximately:

0.0228 * 100% = 2.28%

Therefore, we can conclude that only about 2.28% of vehicles in Santa Clara are more than 6 years old, based on the given average age and standard deviation of the vehicle age distribution.

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Answer:

50 minutes

Step-by-step explanation:

Given:

\(\bullet \ \ \text{Monday:} \ \dfrac{2}{3} \times \text{Hour}\\\\\bullet \ \text{Wednesday:} \ \dfrac{1}{2} \times \text{Hour}\)

Since Emily only practiced on Monday and Wednesday, the sum of time on both days is the time Emily practiced on the piano for a week.

\(\implies \text{Monday + Wednesday = Total time practiced on piano for a week}\)

Substitute the times in the equation

\(\implies (\dfrac{2}{3} \times \text{Hour}) + (\dfrac{1}{2} \times \text{Hour}) = \text{Total time practiced on piano for a week}\)

Simplify the equation

\(\implies (\dfrac{2}{3} \times 60 \ \text{minutes}) + (\dfrac{1}{2} \times 60 \ \text{minutes}) = \text{Total time practiced on piano for a week}\)

\(\implies (20 \ \text{minutes}) + (30 \ \text{minutes}) = \text{Total time practiced on piano for a week}\)

\(\implies \boxed{50 \ \text{minutes} = \text{Total time practiced on piano for a week}}\)

Answer:

2 dollars.

Step-by-step explanation:

1 meter costs 3 dollars

2/3 meter costs 2/3 * 3

2/3 * 3 = 2

So you would pay 2 dollars for 2/3 of a meter.

The standard deviation of the salaries for the company's 80 employees is calculated to be X, where X represents the numerical value of the standard deviation.

The standard deviation measures the dispersion or variability of a set of data points. In order to calculate the standard deviation, we need to first find the mean (average) of the salaries. Then, for each salary, we calculate the difference between the salary and the mean, square that difference, and sum up all the squared differences. Next, we divide the sum by the total number of salaries (80 in this case) minus 1 to obtain the variance. Finally, the standard deviation is obtained by taking the square root of the variance. This accounts for the fact that the squared differences are in squared units, while the standard deviation should be in the original units (currency in this case).

By following this process, we can find the standard deviation of the salaries for the 80 employees in the company. This value represents the measure of variability or spread in the salary distribution, providing insights into how salaries deviate from the mean.

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Answer:

1×

Step-by-step explanation:

#:;:,dgvgukyujj hhyfh

Answer:

\({{\underline{\textsf{\textbf{A. ∠AOB and ∠COB are supplementary to each other. }}}}}\)

Step-by-step explanation:

As in the question given that, ∠AOB and ∠COB are linear pair and being theses angles are supplements it will form 180°. Hence, option A is the correct ✔️

∠AOB and ∠COB forms a linear pair

∠AOB and ∠COB are supplementary to each other

Given :

In the diagram, ∠AOB and ∠COB form a linear pair.

∠AOB and ∠COB forms a straight line . the sum of angles in a straight line is 180 degrees.

When the sum of angles is equal to 180 degree then they are called as supplementary angles.

∠AOB and ∠COB form a linear pair.

\(<AOB +<COB =180\)

the sum of both the angles are equal to 180 degrees .

So, ∠AOB and ∠COB  are supplementary to each other.

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Answer:

it would be 4.3/5 I believe cause you didnt say a half

so you would cut the shoe size in half and since you cant do 4.3 or4.2 it would be a fraction so it would be 4.3/5

hope this helps!!!!