# Posts by steven

Total # Posts: 585

**statistics 4.**

The manufacturer of Porshe 918 Spyder car claims that their car can go from 0 mph to 60 mph speed in less than 2.5 seconds. To test this claim, a sample of 40 new cars of this type were driven and their average 0-60 mph time was 2.6 seconds with a standard deviation of 0.5 ...

**statistics 3.**

A student union wants to obtain a 90% confidence interval for the proportion of “full time” students who hold a part-time job for 20 hours or more per week. For this purpose, they want to interview a sample of full-time students. They want a margin of error to be at ...

**statistics 4.**

The manufacturer of Porshe 918 Spyder car claims that their car can go from 0 mph to 60 mph speed in less than 2.5 seconds. To test this claim, a sample of 40 new cars of this type were driven and their average 0-60 mph time was 2.6 seconds with a standard deviation of 0.5 ...

**Statistics 4**

The manufacturer of Porshe 918 Spyder car claims that their car can go from 0 mph to 60 mph speed in less than 2.5 seconds. To test this claim, a sample of 40 new cars of this type were driven and their average 0-60 mph time was 2.6 seconds with a standard deviation of 0.5 ...

**Statistics 3**

A student union wants to obtain a 90% confidence interval for the proportion of “full time” students who hold a part-time job for 20 hours or more per week. For this purpose, they want to interview a sample of full-time students. They want a margin of error to be at ...

**Statistics 2**

The body temperature of healthy human beings can be assumed to have a normal distribution with mean and standard deviation . Body temperature measurements taken from a sample of 130 healthy individuals shows the sample mean temperature to be 98.249O F and ...

**Statistics**

How would you check the Z table for the first problem?

**Statistics**

A manufacturing facility produces iron rods whose mean diameter is 2.5 inches with a standard deviation of 0.2 inch. If a sample of 50 metal rods produced by the facility were randomly selected, what is the probability that the mean of these rods will lie between 2.4 inches ...

**Psychology**

17 Albert Ellis depicts the relationship between irrational belief and negative emotions through use of: a. a contingence contract. b. dialectrical theory. c.the A-B-C model. d. observational learning.

**Psychology**

4 The big Five in personality theories refers to which of the following? a. a set of functional traits such as neuroticism and openness to experiences. b. the group of personality theorists who criticized Freud's theory as too sexual. c. The effect of positive ...

**Psychology**

1 In Psychology, the study of personality focuses on: a. change. b. stability. c. external factors. d. learning factors.

**Psychology**

4 The big Five in personality theories refers to which of the following? a. a set of functional traits such as neuroticism and openness to experiences. b. the group of personality theorists who criticized Freud's theory as too sexual. c. The effect of positive ...

**sychology**

2 Carl Jung's idea of the collective unconscious state that we share: a. inherited universal ideas, wishes and memories. b. common learned experiences in childhood or infancy. c. tendencies to sacrifice ourselves for the group. d. ideas that arise from, and are specific to...

**Math Statistics**

A company sells cans of chicken soup that that are advertised to contain 20 oz. However due to variations in the manufacturing process, the volume of soup in the cans is, in fact, Normally distributed with a mean of 20.1 oz and a standard deviation of 0.4 oz. • What is ...

**Math**

Suppose a random variable X has a uniform distribution over the interval [-10,10]. • Find the probability that X lies between -2 and 6? • Find the probability that X2 lies between 9 and 64? (Note X2 is the square of X.)

**Statistics Question 3**

A company sells cans of chicken soup that that are advertised to contain 20 oz. However due to variations in the manufacturing process, the volume of soup in the cans is, in fact, Normally distributed with a mean of 20.1 oz and a standard deviation of 0.4 oz. • What is ...

**statistics Question 2**

Suppose a person buys 100 shares of stock at in a company at the cost price of $10 per share. He plans to sell at the end of the next month at whatever is the price at that time. The projected price of the stock at the end of next month and the corresponding probability of ...

**Statistics Question 1**

According to the American Heart Association, one in every four deaths in the U.S. is due to heart disease. Suppose 25 people will die in the U.S. in the next 5 minutes. • What is the chance that exactly 5 of the deaths will be due to heart disease? • What is the ...

**Statistics**

Are you sure that is the variance. I got .14

**Statistics**

Suppose a person buys 100 shares of stock at in a company at the cost price of $10 per share. He plans to sell at the end of the next month at whatever is the price at that time. The projected price of the stock at the end of next month and the corresponding probability of ...

**statistics**

According to the American Heart Association, one in every four deaths in the U.S. is due to heart disease. Suppose 25 people will die in the U.S. in the next 5 minutes. • What is the chance that exactly 5 of the deaths will be due to heart disease? • What is the ...

**Statistics**

Suppose a random variable X has a uniform distribution over the interval [-10,10]. • Find the probability that X lies between -2 and 6? • Find the probability that X2 lies between 9 and 64? (Note X2 is the square of X.)

**Math**

Rob practiced 3/5 of his music in 25 minutes. About how long did it take him to practice all his music?

**Psychology**

1 In Psychology, the study of personality focuses on: a. change. b. stability. c. external factors. d. learning factors.

**Psychology**

9 Dr. Kyle shared the newspaper clipping with the class. â€œThis is an unusual case, but I believe that punishment phase of the trail would have been different in another state. The crime was committed, but the defendant is not in touch with reality most of the...

**Science**

Are u sure u r right

**reading**

a host of golden daffodils

**reading**

what metaphor is in the poem dafffodils by william wordsworth ?

**reading**

what assonance is in the poem daffodils by william-wordsworth?

**Astronomy**

Calculate the amount of energy released if a total of 1.5 kg of hydrogen is fused into helium.

**Health**

Summarize the effects of low self-esteem

**Can someone check these answer for me?**

Ty y'all the first person because I got a 0 and now my dad's ganna yell at me

**history**

The transformation of the office of UN secretary-general from “chief clerk” to “international peacemaker” proves that a. the Security Council is not as powerful as it was meant to be. b. the General Assembly may also become more active someday. c. the ...

**psychology**

8 Suppose that you are dropping off at a large mall without money and merely wander around looking at stores and displays. Later, someone asks you were a particular store is located in the mall. The fact that you direct the person to the store indicates that ______________ has...

**Psychology**

8 Suppose that you are dropping off at a large mall without money and merely wander around looking at stores and displays. Later, someone asks you were a particular store is located in the mall. The fact that you direct the person to the store indicates that ______________ has...

**English**

I need help writing an english essay

**physics**

A projectile is launched straight up at 55.5 m/s from a height of 73.5 m, at the edge of a sheer cliff. The projectile falls, just missing the cliff and hitting the ground below.

**Chemistry**

hi im steven i posted this question, can anyone help me understand how to do this problem and explain it to me please. I'm not really like this unit and i'm stressing for the exam coming up. please and thank you

**math**

How many ordered pairs of integers solutions (x,y) are there to 2x^2+3xy+y^2+2x+y+18=0?

**Physics**

Certain transmission lines can be modeled as a long 3D circuit as shown in the figure below. Here, all the the wires have equal length and electrical resistance R=1 Ω. Determine the equivalent resistance in Ohms between the points A and B. Assume the transmission line to ...

**physics (please help elena)**

We will now examine how much time we need to stop a ship-engine-like cylinder. Suppose you take a rotating cylinder and let it roll to the right until it reaches a vertical wall. It then spins against the two walls as shown in the picture, slowly slowing down. How much time ...

**Physics**

Dust particles are trapped on a surface. There are two energy levels particles can be in: absorbed on a surface with zero energy, and wiggling with energy E=3/2kT. However, since the surface area is limited, not all particles can be in any state. There are 1000 particles and ...

**Physics**

Rotating cylinders are not just physical abstractions: for example, they can turn a flow of the air, thus creating lift as the airplane wings. Historically people have even used rotating cylinders to power ships (although with little efficiency). NASA wrote more about this ...

**math**

i mean f^(5)(x)=f(f(f(f(f(x))))).

**math**

Define the function f(x)=2x/(1−x^2). Find the number of distinct real solutions of the equation f^(5)(x)=x.

**math**

Determine how many 1000 digit numbers A have the following property: When any digit of A, aside from the first, is deleted to form a 999 digit number B, then B divides A.

**physics**

A U.S quarter is rolling on the floor without slipping in such a way that it describes a circular path of radius R=4 cm. The plane of the coin is tilted at an angle of θ=45∘ with respect to the horizontal plane (see the figure below). Find the coin's period T in...

**Physics**

A wire is bent into the shape of an planar Archimedean spiral which in polar coordinates is described by the equation r=bθ. The spiral has N=100 turns and outer radius R=10 cm (R is the distance from point O to point T). Note that in the figure below we show a spiral ...

**physics**

Yeah it is !

**physics**

Our muscles atrophy when there is no gravitational force. On long space flights this is a problem, which is why astronauts exercise. On very long space flights it might be advisable to simulate gravity. Your space ship is a long cylinder of radius 100 m that spins about its ...

**Data Structures and Algorithms**

how can i give the link ??

**Data Structures and Algorithms**

Given integers R,M with M≠0, let S(R,M) denote the smallest positive integer x satisfying the congruence Rx≡1(mod M) if such an x exists. If such an x does not exist, put S(R,M)=0. Each line of this text file contains a pair of space separated integers representing...

**physics**

so whats the correct answer?

**physics**

no no your correct but correct answer will bet putting h-3 in place of h..

**physics**

i think we will get from your way damon h be about 15.68 which is wrong..

**physics**

A bungee jumper jumps from a bridge with a 3 m long bungee cord. Once the cord starts to stretch, it acts like an ideal spring with coefficient of elasticity k=100 N/m. What should be the minimum height of the bridge in m so that this jump is safe for the jumper? Details and ...

**physics**

You prefer soft-boiled to hard-boiled eggs, but you hate waiting next to your eggs to check if they're cooked. Therefore, you want to determine how often do you need to check the eggs so that they're not overcooked. What time does it take in minutes for a soft-boiled ...

**physics**

i researched online and it says J/kgK is the same as J/kgC so im gunna try just using 15 as the temperature, tell me what u get?

**physics**

i got 33.8 minutes im not sure what im doing wrong :/

**physics**

You prefer soft-boiled to hard-boiled eggs, but you hate waiting next to your eggs to check if they're cooked. Therefore, you want to determine how often do you need to check the eggs so that they're not overcooked. What time does it take in minutes for a soft-boiled ...

**physics**

You prefer soft-boiled to hard-boiled eggs, but you hate waiting next to your eggs to check if they're cooked. Therefore, you want to determine how often do you need to check the eggs so that they're not overcooked. What time does it take in minutes for a soft-boiled ...

**Math**

George studied 1/4 hour on Monday and 3/8 hour on Tuesday. How long did he study altogether on both days?

**math**

How Many years will it take to grow $321 to a value of 450.22 at a compounded rate of 12 percent

**Math**

What is the present value of $803 to be received 18 years from now at 10% discount rate.

**physics**

true

**physics**

True or false. Electric energy is transferred from generating stations to consumers' premises at extremely low voltage?

**Calculus**

I'm trying to find the radius of convergence for $(x-2)^n/(2x+1) I did the ratio test and ended up with: absolute value[(x-2)/(2x+1)]<1 How would I solve for the inequality at this point?

**math calculus**

Find the equation of the function f whose graph passes through the given point. (Remember to use ln |u| where appropriate.) f'(x) = x^3 − 4x^2 + 3/ x − 3 ; (4, −5) f(x) =

**math calculus**

Find the equation of the function f whose graph passes through the point (0, 4/3) and whose derivative is f'(x) = x sqrt 16 − x^2 . f(x) =

**math calculus**

The marginal cost of a product is modeled by dC/dx= 16/cube root 16x + 3 where x is the number of units. When x = 17, C = 120. (a) Find the cost function. (Round your constant term to two decimal places.) c= (b) Find the cost of producing 90 units. (Round your answer to two ...

**Calculus**

The linearization at a=0 to sqrt(1+6x) is A+Bx where A is: ____ and where B is : ______

**math calculus (please help me)**

Solve for t. (Round your answer to two decimal places. (2 − (2.479/35))^7t= 29

**Geometry**

Given the sets A={2,15,21,5,13} and B={6,9,15,12,21} , what is the sum of all the elements in A¾B ?

**Geometry**

The three interior angles in a triangle are x ∘ , (2x+24) ∘ and (3x+48) ∘ . What is the value of x ?

**Physics**

I got to, mv^2/r = mew(mg) that's it...... idk how im supposed to solve all those unknowns....

**math**

that is such a mission though lol, is that the only way?

**Physics**

8000

**Statistics**

DM Co. sells computer parts by mail. The company claims that at least 90% of all orders are delivered on time. A sample of 150 orders showed that 129 were mailed on time. Is the company’s claim true? Test using the 2.5% level of significance. Use the 5 step procedure.

**Statistics**

A hospital claims that the mean waiting time at its emergency room is 25 minutes. A random sample of 16 patients produced a mean wait time of 27.5 minutes with a standard deviation of 4.8 minutes. Use the 1% level of significance to test is the wait time is different from 25 ...

**Algebra**

As x ranges over all real values, what is the minimum value of f(x)=|x-123|+|x-456| + |x-789| ?

**algebra**

Find the sum of all positive integers b such that b^2=a^3+1, where a is a prime number.

**Algebra**

If a, b and c are non-zero reals such that a + b + c = 11 and \frac {1}{a} + \frac {1}{b} +\frac {1}{c} = 0, what is the value of a^2 + b^2 + c^2?

**Calculus**

The volume of the 3-dimensional structure formed by rotating the circle x^2 + (y-5)^2 = 1 around the x-axis can be expressed as V = a\pi^2. What is the value of a?

**Trigonometry**

If \cot \left(\sin^{-1} \frac{1}{5}\right) = m, what is the value of m^2?

**home work**

The ball is throw in to the air . If its height in feet is given by - 16t^2 + 64t, at what time t will the ball reach a height of 64 feet?

**Statistics**

A company that manufactures exercise machines wanted to know the percentage of large companies that provides on-site health club facilities. A sample of 240 such companies showed that 96 of them provide such facilities on site. a. What is the point estimate of the percentage ...

**Statistics**

A company that manufactures exercise machines wanted to know the percentage of large companies that provides on-site health club facilities. A sample of 240 such companies showed that 96 of them provide such facilities on site. a. What is the point estimate of the percentage ...

**geometry**

38ft rope extended to end gives 70°angle of elevation what is height

**Statistics**

Suppose that 7.6% of all people are allergic to the H1N1 vaccine. A sample of 517 people are selected a. Calculate the probability that less than 8% of the sample will be allergic to vaccine.

**business**

$72,000

**statistics**

.31

**Statistics**

Cola Corporation produces Orange Cola. The filling machines are adjusted to pour 12 ounces of soda into each 12-ounce can. However, the actual amount of soda poured into each can is not exactly 12 ounces; it varies from can to can. It has been observed that the net amount of ...

**Statistics**

Cola Corporation produces Orange Cola. The filling machines are adjusted to pour 12 ounces of soda into each 12-ounce can. However, the actual amount of soda poured into each can is not exactly 12 ounces; it varies from can to can. It has been observed that the net amount of ...

**Statistics**

Each of 4 people is presented with gourmet coffee and ordinary coffee and asked to identify the gourmet coffee. None of the 4 can really tell the difference and are merely guessing. a. What is the probability that exactly 2 of the 4 correctly identify the gourmet coffee? b. ...

**Statistics**

Each of 4 people is presented with gourmet coffee and ordinary coffee and asked to identify the gourmet coffee. None of the 4 can really tell the difference and are merely guessing. a.What is the probability that exactly 2 of the 4 correctly identify the gourmet coffee? b.What...

**Statistics**

Each of 4 people is presented with gourmet coffee and ordinary coffee and asked to identify the gourmet coffee. None of the 4 can really tell the difference and are merely guessing. a.What is the probability that exactly 2 of the 4 correctly identify the gourmet coffee? b.What...

**algebra**

Can someone please help me solve (2f^2 g^3) ----------- 4 (3fg) posed to be a fraction bar with the four on the outside of the ()

**Algeba - Math**

A truck rental company offers two plans. One rental plan is $78 per day and $.12 per mile driven. Te other truck plan offers no daily fee but it is $.36 per mile driven. Determine the number of miles that must be driven in one day for the cost to be the same.

**Statistics-Probability**

An instructor will choose 3 problems from a set of 7 containing 3 hard and 4 easy problems. If the selection is made at random, what is the probability that only the hard problems are chosen?

**math**

Write it out