hightech incorporated randomly tests its employees about company policies. last year in the 400 random tests conducted, 14 employees failed the test.
what is the point estimate of the population proportion

Answer:

567000 dollars

Step-by-step explanation:

Straightforward if 7000 for 3 hours then 3*27=81 and 7000*81=567000

To compute the covariance matrix of centered data matrix X, the following matrix operation can be used: \(cov(X) = (1/(n-1)) X^T X\), where \(X^T\) is the transpose of X.

Given a matrix\($X$\) of centered data with a column for each field in the data and a row for each sample, the covariance matrix of the variables in the data can be computed using matrix operations as:

\($\text{cov}(X) = \frac{1}{n-1}X^TX$\)

where \($n$\) is the number of samples and \($X^T$\) is the transpose of the matrix \($X$\). The matrix multiplication \($X^TX$\) computes the sum of the outer products of the columns of \($X$\), and dividing by \($n-1$\) gives an unbiased estimate of the covariance matrix. Note that the resulting matrix is a symmetric matrix with variances on the diagonal and covariances off the diagonal.

Learn more about covariance matrix

https://brainly.com/question/30481066

#SPJ4

Answer:

0.6

Step-by-step explanation:

Answer:

0.6

Step-by-step explanation:

Adding a negative number is the same as subtracting.  So 1.4 - 0.8 = 0.6

Answer:

the answer would be $45

Step-by-step explanation:

Answer:

30

Step-by-step explanation:

all traiangles have to same vetec

Answer:

Since the angle on the top is a 90 degree as you might have noticed.

And the other angle is 30 degrees.

Then the last angle should be 60 degrees.

(Because every angle in a triangle should add up to 180 degrees)

I don't know about the measure of the sides tho.

Hope that helps !

The time taken by the Ne to come out of the container will be 26.83 hours

Here it is given in the question that it takes 12 hours for half of the He in a container to leak out If the same container is refilled with Ne then time taken by the Ne gas to leak will be calculated from the formula

\(\dfrac{V_{He}}{t_{He}}\times \dfrac{t_{Ne}}{V_{Ne}}=\sqrt\dfrac{M_{Ne}}{M_{He}}\)

Since the volume of both the gases will be same so

\(V_{He}=V_{Ne}\)

\(\dfrac{t_{Ne}}{t_{He}}=\sqrt5\)

\(t_{Ne}=12\times \sqrt5\)

\(t_{Ne}=12\times 2.236\)

\(t_{Ne}=26.83\ hours\)

Hence the time taken by the Ne to come out of the container will be 26.83 hours

To know more about Gases follow

https://brainly.com/question/25736513

#SPJ1

The solution is found by slope of the graph and the solution is 2,200.

Let x the amount of money per hour and y the total amount of money.

Studio A:-

Rents for 100 dollars plus 50 dollars per hour.

\(y= 100 + 50x\)

So the slope is 50 and the y intercept is 100.

Studio B:-

rents for 50 dollars plus 75 dollars per hour.

\(y= 50 + 75x\)

So the slope is 75 and the y intercept is 50.

ThrTh solution is 2200 , see the gragraphph.

To know more about Slope of graph go through:-

https://brainly.com/question/3493733

#SPJ4

Complete question:- You and your friends decide to rent some studio time to make a CD. Big Notes Studio rents for $100 plus $50 per hour. Great Sounds Studio rents for $50 plus $75 per hour. Solve the system by graphic method.

The process capability index for this lab is 5.14

We know that the formula for the process capability index is:

\(C_{p}=min(\frac{X-LS}{3\sigma} , \frac{US-X}{3\sigma} )\)

Here, the average turnaround(X) = 26.2

the standard deviation ( σ) = 1.05 minutes

the nominal value for service = 30 minutes

the upper specification= 50 minutes

and lower specification = 10 minutes

Using above formula the  process capability index would be,

\(C_{p}=min(\frac{X-LS}{3\sigma} , \frac{US-X}{3\sigma} )\\\\C_{p}=min(\frac{26.2-10}{3\times 1.05} , \frac{50-26.2}{3.15} )\\\\C_{p}=min(\frac{16.2}{3.15} , \frac{23.8}{3.15} )\\\\C_{p}=min(5.14, 7.56)\\\\C_{p}=5.14\)

Therefore, the  process capability index is 5.14

Learn more about the standard deviation here:

https://brainly.com/question/23907081

#SPJ4

The conclusion of hypothesis testing through the t-test is that the technical engineer have not statistically significant evidence to present to the university budget committee to purchase Krapple because it has, on average, a longer battery life. The p-value for t-test is equals to the 0.0074.

We have study related to battery life of two different laptops for student usage at a community college in california. There are two models, Krapple and Madroid. Engineer randomly assigned students to one of the laptop models and recorded the number of minutes the students were able to use the computer until the battery ran out. Here we have paired data so paired t test should be used.

Let d = Krapple - Madroid ( Sample sum of difference). Above table shows the calculations, Sample size, n = 15

Sample sum of difference, d = 1243

Sample mean of differences: Σα

= 1243/15 = 82.87

Sample standard deviation = \(\sqrt{\frac{488317.73}{15-1}}\)

= 186.76

The Null and alternative Hypotheses are defined as \(H_0 : \mu_1- \mu_2 = 0\)

\(H_a : \mu_1 - \mu_2 < 0\)

Level of significance, α = 0.05

Test is one tailed (right tailed) df = n- 1

=> Degree of freedom = 14

Using the t - test, \(t = \frac{\sum d }{ \sqrt{\frac{n\sum d² - (\sum d)²}{n - 1}}}\)

so, \( t = \frac{ 1243}{\sqrt{\frac{15× 488317.73 - (1243)²}{ 15 -1}}}\)

=> \(t =\frac{1243}{\sqrt{412836.925}}\)

=> t = 1.93

Now, using distribution table, P- value for t = 1.93, is 0.074. See, p-value > 0.05 , so result is not statistically significant. So, there is no evidence to reject the null hypothesis.

Conclusion: The technical engineer do not have statistically significant evidence to present to the university budget committee to purchase Krapple because it has, on average, a longer battery life.

Hence, required p-value is 0.074.

For more information about hypothesis testing, refer :

https://brainly.com/question/29690266

#SPJ4

Complete question:

the above first figure complete the question.

a technical engineer is interested in understanding the battery life of two different laptops for student usage at a community college in california. the two models he has are madroid and krapple. he randomly assigned students to one of the laptop models and recorded the number of minutes the students were able to use the computer until the battery ran out. use data file: laptops.csv download laptops.csv does the technical engineer have statistically significant evidence to present to the university budget committee to purchase krapple because it has, on average, a longer battery life? provide the p-value from your analysis.

The minimax regret criterion, also known as the minimax regret strategy, is an approach used in decision theory by economists. It aims to minimize the maximum regret that could be experienced when choosing a particular course of action.

The minimax regret criterion is a decision-making technique that takes into account the potential regret associated with each possible decision. It recognizes that decision-makers often face uncertainty and that their choices may lead to outcomes that are different from what was initially expected. By considering the worst-case scenario or maximum regret for each decision, the minimax regret criterion helps decision-makers select the option that minimizes the potential regret.

In this approach, decision-makers evaluate the consequences of their choices by comparing the actual outcome with the best outcome that could have been achieved if a different decision had been made. The minimax regret strategy focuses on minimizing the maximum regret across all possible decisions, aiming to choose the option that would result in the least regret, regardless of the actual outcome.

Economists often use the minimax regret criterion to analyze decision problems under uncertainty, particularly when the consequences of different actions cannot be precisely predicted. It provides a framework for decision-making that incorporates risk aversion and the desire to minimize the potential for regret. By considering the worst possible outcomes, decision-makers can make more informed choices that take into account the potential regrets associated with their decisions.

Learn more about outcomes here:

https://brainly.com/question/17238771

#SPJ11

the area of a circle with a rectangle will be [π w²2]/4.

What is the area of a circle?

The measurement of the circle's boundaries is called as the circumference or perimeter of the circle. whereas the circumference of a circle determines the space it occupies. The circumference of a circle is its length when it is opened up and drawn as a straight line. Units like cm or unit m are typically used to measure it. The circle's radius is considered while calculating the circumference of the circle using the formula. As a result, in order to calculate the circle's perimeter, we must know the radius or diameter value.

area of the circle will be πr².

The area of a circle inscribed in a rectangle if the length of the rectangle is l and the width is w

= [π w²2]/4.

Hence the area of a circle with a rectangle will be [π w²2]/4.

Learn more about area of a circle, by the following link.

https://brainly.com/question/17380589

#SPJ4

Answer:

Step-by-step explanation:

2x + x/2 = 10           multiply by 2

4x + x = 20              Combine the left

5x = 20                    Divide by 5

x = 20/5

x = 4

Answer:

4

Step-by-step explanation:

Let x equal the unknown number.

Sum means we're dealing with addition.

Twice and half means we're dealing with multiplication (and/or divison).

Written out, the sum of 2 times some number (x) PLUS half that same number (x) is equal to 10.

So, lets put 10 on one side:

10 = some equation

Put the variables on the other side:

some number = 2x + .5x

Set them equal to each other and solve algebraically:

10 = 2x + .5x

Combine like terms: 2x and .5x

10 = 2.5x

Divide both sides by 2.5x

4 = x

Final answer:

x = 4

Hope this helps!

Sydney has$42 dollars in her piggy bank Step-by-step explanation: if she put one dollar in her bank for 3 weeks you do 7x3 and get 21 you double that and then you 21x2 and get 41 add that one dollar Tell me if im wrong

Sydney would have $7 in her account in 3 weeks.

The general equation of a straight line is -

[y] = [m]x + [c]

where -

[m] is slope of line which tells the unit rate of change of [y] with respect to [x].

[c] is the y - intercept i.e. the point where the graph cuts the [y] axis.

The equation of a straight line can be also written as -

Ax + By + C = 0

By = - Ax - C

y = (- A/B)x - (C/A)

We have the following problem -

Sydney put $1 in her Piggy bank. For the next three weeks Sydney doubled the amount she put in her bank.

Assume that she saves $y in [x] weeks. We can model the linear function of her saving as -

y = 1 + 2x

or we can write -

y = 2x + 1

For x = 3, we will have -

y = 7

Therefore, Sydney would have $7 in her account in 3 weeks.

To solve more questions on straight lines, visit the link below-

brainly.com/question/29030795

#SPJ2

Answer: 148

Step-by-step explanation:

180-32 = 148

B=C

P=X

Answer:

x = 148 degrees

Step-by-step explanation:

180 - 32 = 148

Answer

3.- *in order* 4,8,   4 aka- 4/40- 1/10

                               40

5.- *in order* 3/5 x 3/7 = 9/35

Step-by-step explanation:

you have to simplify 4/40 wich is 1/10 and the rest s self explanitory. hope this helped!!

Answer:

70

Step-by-step explanation:

the sum of the three is 180, so c is 60, a is 70, and b is 50.

By reflection triangle JAR across x- axis, we get

By comparing the given options, we can see that the answer is option D

If 09 people can complete the job in 75 days then 25 people needs 45 days to complete the job.

Let T be the time and L be the Labor (Number of people working on the bridge).

T ∞ 1/√L  (Inverse relationship)

T = K/√L                   ----------------------------- (1)

Since, Constant "K" is introduced once the variation sign (∞) changes to equality (=) sign.

According to the question,

Time (T) = 75 days    and

labor (L) = 09

From the equation (1), we get,

    T = K / √L

⇒ 75   = K/√9

⇒ 75= K/3

⇒ K= 225

First, the relationship between these variables is:

                       T = 225/√L

Therefore, how long it will take 25 people to do it means that we should look for the time.

                           T=225/√L

                      ⇒  T= 225/√25

                      ⇒  T= 225/5

                      ⇒  T= 45 days.

therefore, 25 people needs 45 days to complete the job.

Learn more about inverse relation :

https://brainly.com/question/1675160

#SPJ4

To calculate the average rate of change of a function from x = -1 to x = 1, we need to find the difference in the function's values at those two points and divide it by the difference in the x-values.

Let's denote the function f(x). The average rate of change (AROC) is given by:

AROC = (f(1) - f(-1)) / (1 - (-1))

To determine the function's values at x = 1 and x = -1, we need more specific information or a graph of the function f(x).

Without that information, we cannot provide an accurate answer or simplify the fraction.

If you can provide the function's equation or a graph, I would be more than happy to assist you in finding the average rate of change.

For more such questions on x-values

https://brainly.com/question/28339245

#SPJ8

What is covariance

Covariance measures the directional relationship between the returns of two assets. A positive covariance means that the asset returns move together, a negative covariance means they move in opposite directions.

What does covariance between two variables mean?

Covariance measures the direction of the relationship between two variables. A positive covariance means that both variables tend to be high or low at the same time. Negative covariance means that as one variable increases, the other tends to decrease.

correlation coefficient

Correlation coefficient measures the strength of association between two variables. The most common correlation coefficient, called the Pearson product-moment correlation coefficient, measures the strength of linear association between variables measured on an interval or ratio scale.

according to the question given data,

the greater the absolute size of the correlation coefficient, the greater is the covariation between the two variables ,or the stronger is their relationship,(true)

to know more about correlation coefficient visit

https://brainly.com/question/28451077

#SPJ4

Answer:

The Greatest Common Factor (GCF) for 28 and 63, notation CGF(28,63), is 7.

Step-by-step explanation:

The factors of 28 are 1,2,4,7,14,28;

The factors of 63 are 1,3,7,9,21,63.

So, as we can see, the Greatest Common Factor or Divisor is 7, because it is the greatest number that divides evenly into all of them.

Brainlist maybe? :)

Answer:

- 9pq

Step-by-step explanation:

8pq + (- 17pq)

8pq - 17pq

- 9pq

The number of prints that the probability of producing at least one quality print is 22.

Given that the probability of producing a high-quality color print is 0.10.

The binomial distribution summarizes the number of trials or observations when each trial has an equal chance of reaching a certain value. The binomial distribution determines the probability of observing a particular number of positive results in a defined number of tests.

Probability of high-quality color print (P) = 0.1

Probability of producing not high-quality color print (1-P) = 0.9

Assume the no. of prints to produce 'n' and these are produced independently say 'x' be the no. of producing quality prints, which follows a binomial distribution.

The probability function of binomial distribution is

\(P(X=x)\left(\begin{array}{l}n\\ x\end{array}\right)P^x(1-P)^{n-x},x=0,1,2,.....,n\)

Given that

P(X≥1)≥0.90

1-P(X=0)≥0.90

1-(1-P)ⁿ≥0.90

1-(0.90)ⁿ≥0.90

(0.90)ⁿ≥0.10

Now, taking log of both sides, we get

nlog(0.90)≥log(0.10)

n(0.1053)≥2.3025

n≥21.86

n≈22

Hence, the probability of producing a high-quality color print is 0.10 and the number of prints to produce so that the probability of producing at least one quality print is larger than 0.90 is 22.

Learn more about binomial distribution from here brainly.com/question/23929786

#SPJ4

If a number in parenthesis is directly next to a number without, then the two numbers need multiplied.

-12(5/6)(-2/15) is an example of a double multiplication. But we'll multiply -12 and 5/6 first, then multiply the product by -2/15.

-12x5/6=14 2/5

14 2/5x-2/15=-1 23/25

---

hope it helps

sorry if it doesn't

The music box has a surface area of 1350 square cm.

A cube has six square faces that are all the same size. The length of each side of the cube is given as 15 cm. Therefore, the surface area of the cube can be found by calculating the area of one square face and then multiplying it by 6:

Area of one square face = (15 cm) x (15 cm) = 225 square cm

The surface area of the cube = 6 x (Area of one square face)

= 6 x 225 square cm

= 1350 square cm

As a result, the music box has a surface area of 1350 square cm.

Learn more about Surface area of cube here

https://brainly.com/question/13789496

#SPJ4

-1/7, since parallel lines have equal slopes.