Listen Using the Thomas Graphical Method, the range of BOD rate constant (k) in base e from the following data is estimated be nearly. Submit your "detail work" including the graph for partial credit. (CLO 3) Time (day) 2 BOD (mg/L) 120 5 210 1) k 0.175-0.210/day 2) K 0.475-0.580 /day 3) k=0.275-0.380/day 10 262 20 279 35 280

Answer:

The graph of the circle is not a function

Inferential statistics helps to make conclusions or provide information about the data. From the sampling data , using inferential statistics can conclude how a population think.

It is used to give the estimates about the large group and give information about data based on the hypothesis. Hypothesis is used to find the relationship between variables and it uses the data to make the comparisons of population.

Correlation and Comparison are two other tests available other than Hypothesis testing Comparison testing is used in discrete statistics. Estimating parameters and Hypothesis tests are two main areas in inferential statistics.

Estimating parameters tells about the population using a statistic from the sample data. Hypothesis data helps to answer question in research using sample data.

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The required mean and standard deviation of height J is 69.6 inches and 2.88 inches.

The mean of the values is the ratio of the total sum of values to the number of values.

here,
1 foot = 12 inches,
Mean  = 5.8 feet
Mean = 5.8 (12 inches)
mean  = 69.6 inches,

Now,
Standard deviation = 0.24 (feet)
Standard deviation  = 0.24 (12 inches)
Standard deviation = 2.88 inches

Thus, the required mean and standard deviation of height J is 69.6 inches and 2.88 inches.

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The required answer is  [61.77, 69.23].

Given: Mean height of all 9th grade students at one high school is estimated as ≈65.5 Population standard deviation is σ = 3 inches. Number of samples n = 6Margin of error at 99% confidence level = 1.23Margin of error = E = z(σ/√n)Now, z = inv Norm(0.995) (as it is 99% confidence interval, α=0.01 and 1-α=0.99)⇒ inv Norm(0.995) = 2.58∴ E = 2.58(3/√6) = 3.73∴ The margin of error at the 99% confidence level is 3.73 inches .

Confidence interval = [sample mean - E, sample mean + E]=[65.5 - 3.73, 65.5 + 3.73] = [61.77, 69.23]

∴ The 99% confidence interval for the population mean height of all 9th-grade students at that high school is [61.77, 69.23].

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Answer:

the numbers are 85 and -31.

Step-by-step explanation:

first, let the numbers be x and y.

so by question we have,

x+y=54.......(I)

x-y=116......(I I)

now, solve it through elimination method,

x+y=54

x-y=116

here, y and y cancelled out and we get,

or, x+x=54+116

or, 2x=170

or, x=170/2

therefore, x=85

now put value of x in any equation. let's put in eqn (I), we get,

or, x+y=54

or,85+y=54

or, y=54-85

so, y= -31

therefore, the numbers are 85 and - 31.

The answer to the expression 2b x b is simply 2b^2. Exponentiation is a mathematical operation that raises a number to a power, and in this case, b is raised to the power of 2.

Alternatively, if exponentiation is not allowed, the answer to the expression is simply 2b * b, which can be simplified to 2b^2 as well.

So, the answer to the expression 2b x b is 2b^2, regardless of whether or not exponentiation is used.

The expression 2b x b represents the product of two scalars, 2 and b, multiplied by a scalar b.

The expression could represent a variety of quantities in mathematics and science, including the area of a rectangle, the volume of a cube, or the kinetic energy of an object, among others.

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Probably the most effective method researchers use to prevent sampling bias is through simple random sampling where samples are selected strictly by chance.

Answer:

Below in bold.

Step-by-step explanation:

sin S = opposite side / hypotenuse = 77/85

cos S = adjacent side / hypotenuse = 36/85

tan S = opposite side / adjacent side = 77/36.

Answer:

see explanation

Step-by-step explanation:

sin S = \(\frac{opposite}{hypotenuse}\) = \(\frac{TU}{TS}\) = \(\frac{77}{85}\)

cos S = \(\frac{adjacent}{hypotenuse}\) = \(\frac{SU}{TS}\) = \(\frac{36}{85}\)

tan S = \(\frac{opposite}{adjacent}\) = \(\frac{TU}{SU}\) = \(\frac{77}{36}\)

Answer:

Step-by-step explanation:

Not sure..

The probability that student A or B can solve a problem chosen at random is 0.95.

Probability is calculated by dividing the number of favourable outcomes by the number of possible outcomes.

Random: An event is referred to as random when it is not possible to predict it with certainty. The probability that either student A or B will be able to solve a problem chosen at random can be calculated as follows:

P(A or B) = P(A) + P(B) - P(A and B) where: P(A) = probability of A solving a problem = 0.75, P(B) = probability of B solving a problem = 0.7, P(A and B) = probability of both A and B solving a problem. Since A and B are independent, the probability of both solving the problem is:

P(A and B) = P(A) x P(B) = 0.75 x 0.7 = 0.525

Now, using the above formula: P(A or B) = P(A) + P(B) - P(A and B) = 0.75 + 0.7 - 0.525 = 0.925

Therefore, the probability that student A or B can solve a problem chosen at random is 0.95 (or 95%).

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Answer:

42.86%    and          61.91%

Step-by-step explanation:

90/210=9/21=42.86%

130/210=13/21=61.91%

Answer:

-2x+1

Step-by-step explanation:

By evaluating integral ∫∫s (x^2z + y^2z)dS using the Divergence Theorem we get ∫∫s (x^2z + y^2z)dS = ∫(-2,2) ∫(0,2π) [(u^2cos^2(v) + u^2sin^2(v))(16-u^2)/(u+v)](16-u^2)/(u+v)√2 dudv.

Now, let us evaluate the given integrals one by one: 1. Evaluate ∫∫s (x^2z + y^2z)dS where S is part of the plane z = 4 + x + y that lies inside the cylinder x^2 + y^2 = 4. We know that the equation of the plane is z = 4 + x + y. Let us rearrange it in the form of x + y - z = -4. The equation of the cylinder is x^2 + y^2 = 4.

Therefore, the equation of the given surface can be written as x^2 + y^2 + (x+y+4)z = 16. To evaluate the given integral, we need to find the normal vector to the surface. Since the equation of the surface is in the form of ax + by + cz = d, the normal vector is given by the coefficients of x, y, and z. Therefore, the normal vector is <2x + 2y, 2x + 2y, -16>.

Using the parametric form of the surface, we get:r(u, v) = dS = ||r_u × r_v|| dudv = ||<-sin(v)(16-u^2)/(u+v)^2, cos(v)(16-u^2)/(u+v)^2, u>|| dudv = (16-u^2)/(u+v)√2 dudv

Integrating over the region S, we get:∫∫s (x^2z + y^2z)dS = ∫(-2,2) ∫(0,2π) [(u^2cos^2(v) + u^2sin^2(v))(16-u^2)/(u+v)](16-u^2)/(u+v)√2 dudv

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Answer:

Step-by-step explanation:

Answer:

n=9

Step-by-step explanation:

LCM(n,15)=45

LCM(9,15)=45

Answer/Step-by-step explanation:

Given;

A store pays $3 for a magazine.

The markup is 5%.

Solve:

$3 × 5% = 0.15      [Markup Price]

$3 + 0.15 = $3.15 [Final Price]

Hence, the total is $3.15.

~Learn with Lenvy~

Answer:

x = 3

Step-by-step explanation:

-9 + 3(-5x + 7) = -33

-9 - 15x + 21 = -33

- 15x + 12 = -33

         -12 = -12

-15x = -45

/-15    /-15

x = 3

Answer:

x = 3

Step-by-step explanation:

-9+3(-5x+7)=-33

-9-15x+21=-33

12-15x=-33

-15x=-45

x= 3

The probability that a randomly chosen college student exercises in the morning or afternoon is 0.76

We have given that the M be the event that the student exercises in the morning and A be the event that the student exercises in the afternoon.

To find : The probability that a randomly chosen college student exercises in the morning or afternoon

P(M) = 0.25+0.37 = 0.62

P(A) = 0.14+0.37 = 0.51

P(M and A) = 0.37

Now,

P(M or A) = P(M) + P(A) - P(M and A)

                = 0.62 + 0.51 - 0.37

                = 0.76

Hence, Option last 0.76 is the correct choice.

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The probability that there will be no graduate students on the subcommittee = 4/20= 0.2

The probability of an event happening is determined by probability: P(A) = f / N. Probability and odds are related, but probability determines what the odds are. Probability is required before calculating the likelihood of an event. and here total 6 students in which 4 undergrad and 2 grad students A subcommittee of 3 members is to be chosen randomly  so number of ways to choose = C (6,3)

and  ways that no graduate students on the subcommittee is C (4,3)

and probability that there will be no graduate students on the subcommittee = f / N=C (4,3)/C (6,3)

=  4/20 = 0.2

he probability that there will be no graduate students on the subcommittee is 0.2

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Answer:

d^4-6d^3+d+17/d-2

A bit complicated, sorry about that.

There are 5040 different permutations of the set {a, b, c, d, e, f, g}.

7! = 7 x 6 x 5 x 4 x 3 x 2 x 1 = 5040

The set {a, b, c, d, e, f, g} has seven elements, so there are 7! (7 factorial) permutations possible. The factorial of a number is the product of all the numbers up to and including that number. In this case,

7! = 7 x 6 x 5 x 4 x 3 x 2 x 1 = 5040.

This means that there are 5040 different permutations of the set

{a, b, c, d, e, f, g}.

A permutation is defined as an arrangement of elements in a specific order. In this case, the elements are {a, b, c, d, e, f, g} and the order can be changed in any way, as long as all elements are included. For example, one possible permutation is bfgdeca.

This is one of the 5040 possible permutations of the set.

As the set contains seven elements, there are 7! (7 factorial) possible permutations. This means that there are 5040 different permutations of the set {a, b, c, d, e, f, g}.

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To find the mean time, we sum up all the given times and divide by the total number of observations.

The given times are: 6, 4, 7, 4, 4, 7, 4, 10, 9, and 9.

Adding up these times: 6 + 4 + 7 + 4 + 4 + 7 + 4 + 10 + 9 + 9 = 64.

There are 10 observations in total.

Dividing the sum of the times (64) by the total number of observations (10), we find:

Mean time = 64 / 10 = 6.4

Therefore, the mean time spent by the pupils to answer a question is 6.4 seconds.

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Answer:

f rxddx6fxyfxtxd5dx5xdc5rcf5cf55fccf5ctfctd5dx5dxx5rx5tex5erx7gx

ygyvuhUhws

Step-by-step explanation:

6x + 2y = -8

-6x -6x

2y = -6x - 8

y = (-6/2)x - 8/2

y = -3x -4

The probability of choosing a red scrub and then another red scrub is 0.14423 or 14.42%.

To calculate the probability of choosing a red scrub, we first need to know how many red scrubs are in the set. In this case, there are 6 red scrubs out of a total of 13 scrubs. Therefore, the probability of choosing a red scrub is:

Probability of choosing a red scrub = Number of red scrubs / Total number of scrubs

Probability of choosing a red scrub = 6 / 13

Now, we need to calculate the probability of choosing another red scrub after the first one has been chosen. Since one red scrub has already been chosen, there are now only 5 red scrubs left out of a total of 12 scrubs. Therefore, the probability of choosing another red scrub is:

Probability of choosing another red scrub = Number of remaining red scrubs / Total number of remaining scrubs

Probability of choosing another red scrub = 5 / 12

To calculate the probability of both events happening (choosing a red scrub and then another red scrub), we need to multiply the probabilities together. This is known as the multiplication rule of probability.

Probability of both events happening = Probability of the first event x Probability of the second event

Probability of both events happening = (6/13) x (5/12)

Probability of both events happening = 0.14423 or 14.42%

This means that out of all the possible outcomes, there is a 14.42% chance of choosing two red scrubs in a row from a set of 13 scrubs.

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If we change a 95% confidence interval estimate to a 99% confidence interval estimate, we can expect the interval to become wider.

A confidence interval is a range of values that is likely to contain the true population parameter with a certain degree of confidence. A 95% confidence interval means that if we were to repeat the sampling and estimation process many times, we can expect the true population parameter to fall within the interval about 95% of the time.

If we change the confidence level from 95% to 99%, we are increasing the degree of confidence. This means that if we were to repeat the sampling and estimation process many times, we can expect the true population parameter to fall within the interval about 99% of the time.

But, to achieve this higher degree of confidence, we need to widen the interval. This is because as the degree of confidence increases, the interval needs to become wider to capture more possible values of the population parameter.

Therefore, if we change a 95% confidence interval estimate to a 99% confidence interval estimate, we can expect the interval to become wider.

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1 1/2 = 1 5/10

2/5 = 4/10

1 5/10 - 4/10 = 1 1/10

1 1/10 + 2 = 3 1/10

3 1/10 gallons of paint left

Answer: 31/10 gallons of paint.

Step-by-step explanation:

Find common denominators.

3/2 = 15/10

2/5 = 4/10

15/10 - 4/10 = 11/10

2 + 11/10 = 31/10

Answer: mmm

Step-by-step explanation:

mmm

Answer:

DG

Step-by-step explanation:

This is a rectangular prism.  BE & AH are also parallel to CF. but they r not in the answers.