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Tag Archives: Assume

It is desired to estimate the mean gpa of each undergraduate class at a large university. assume that the variance of the gpas is 1.44. how large a sample is necessary to estimate the mean gpa within 0.25 at the 99% confidence level

Mahtematical and statistical reasoning makes it evident that there is a mistake in the writing of the question and the digits were duplicated. So the right question is: “You need to have a password with 5 letters followed by 3 odd digits between 0 and 9, inclusive. If the characters …

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P and s waves from an earthquake travel at different speeds, and this difference helps in locating the earthquake âepicenterâ (where the disturbance took place). (a) if an earthquake occurs and these two waves arrive at a particular seismic station with the p wave 2.0 min ahead of the s wave, then how far away was the earthquake? assume typical speeds of 8.5 km/s and 5.5 km/s for p and s waves, respectively.

The gravitational force Fg between two objects is given by the equation: Fg=(G*m₁*m₂)/r₂, where G=6.67*10^-11 m³ kg⁻¹ s⁻² is the gravitational constant, m₁ and m₂ are the masses of the two bodies and r is the distance between those bodies.  Due to the gravitational attraction the pencil and the eraser will …

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Calculate the vapor pressure of a solution containing 27.2 g of glycerin (c3h8o3) in 132 ml of water at 30.0 ?c. the vapor pressure of pure water at this temperature is 31.8 torr. assume that glycerin is not volatile and dissolves molecularly (i.e., it is not ionic) and use a density of 1.00 g/ml for the water.

Explanation : In the net ionic equations, we are not include the spectator ions in the equations. Spectator ions : The ions present on reactant and product side which do not participate in a reactions. The same ions present on both the sides. (a) The given balanced ionic equation is, …

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A university found that 10% of its students withdraw without completing the introductory statistics course. assume that 20 students registered for the course.

Answer:  The correct option is (C). 10 = square root of the quantity of x minus 8 all squared plus y minus 9 all squared Step-by-step explanation:  Given that the segment AB has point A located at (8, 9). The distance from A to B is 10 units. We are …

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A corporation recently purchased some preferred stock that has a before-tax yield of 5.50%. the company has a tax rate of 38%. what is the after-tax return on the preferred stock? assume a 70% dividend exclusion for tax on dividends.

Answer: The answer to the question: Although she does not have a background in law, she hopes to land the job because of the:___, would be: Screening effect. Explanation: The screening effect is a theory that is used by companies and recruiters in order to effectively select and screen the …

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Your parents are always complaining that you do not do enough housework. they say that you should be helping them out because you are only a student and you have a lot more spare time than them. the number of hours per week that your parents work has a mean of 48.69 hours and a standard deviation of 2.90 hours. you believe that the number of hours per week that you have to study for university has a mean of 48.17 hours and a standard deviation of 2.60 hours. you plan to record the number of hours that you study each week over 15 randomly selected weeks throughout the year. calculate the probability that the mean of your sample is greater than the mean number of hours per week worked by your parents. assume that the population of study hours per week is normally distributed. give your answer as a decimal to 4 decimal places. probability

You need to determine the number of ways in which 30 competitors from 50 can qualify. First, you have to realize that the order is irrelevant, that is: it is the same competitor_1, competitor _2, competitor _3 than competitor_3, competitor_2, competitor_1, or any combination of those three competitors. So, the …

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Harris corporation produces a single product. last year, harris manufactured 27,970 units and sold 22,200 units. production costs for the year were as follows: fixed manufacturing overhead $335,640 variable manufacturing overhead $240,542 direct labor $131,459 direct materials $234,948 sales were $1,043,400, for the year, variable selling and administrative expenses were $113,220, and fixed selling and administrative expenses were $198,587. there was no beginning inventory. assume that direct labor is a variable cost. the contribution margin per unit would be: (do not round intermediate calculations.) $21.30 per unit $20.20 per unit $25.30 per unit $15.70 per unit

The Contribution Margin per unit (CM) can be calculated from the difference of Selling Price per unit (SP) and Total Expenses per unit (TE).   First, let’s calculate the value of SP: SP = Sales / Units sold SP = $1,043,400 / 22,200 units sold SP = $47   Second, …

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You work forty hours a week at a furniture store. You receive a 1,200 dollar weekly salary, plus a 4.1% commision on sales over 12,000 dollars. Assume that you sell enough this week to get the commission. Given the functions f(x) = 0.041x and g(x) = x ̆12,000, which of (fog)(x) and (gof)(x) represents your commission?

Answer: Number of copy machines must be made to minimize the unit cost=160. Step-by-step explanation: We are given that the unit cost function C ( the cost in dollars to make each copy machine) If machines are made =x Then the unit cost function is given by We have to …

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What is the following product? Assume y >/= 0

The basis to respond this question are: 1) Perpedicular lines form a 90° angle between them. 2) The product of the slopes of two any perpendicular lines is – 1. So, from that basic knowledge you can analyze each option: a.Lines s and t have slopes that are opposite reciprocals. …

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What is the following product? Assume d>/= 0

The basis to respond this question are: 1) Perpedicular lines form a 90° angle between them. 2) The product of the slopes of two any perpendicular lines is – 1. So, from that basic knowledge you can analyze each option: a.Lines s and t have slopes that are opposite reciprocals. …

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What price do farmers get for the peach crops? in the third week of June, a random sample of 40 farming regions gave a sample mean of $6.88 per basket. assume that the standard deviation is known to be $1.92 per basket. find a 90% confidence interval for the population mean price per basket that farmers in this region get for their peach crop.

Answer: C. Yes, because the population values appear to be normally distributed. Step-by-step explanation: Given is a graph which shows the distribution of values of a population The graph has the following characteristics i) Bell shaped ii) symmerical about mid vertical line iii) Unimodal with mode = median =mean iv) …

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As the sun rises and the air temperature increases, what typically happens to the relative humidity? (assume the dewpoint temperature remains constant.) select one: a. it will increase. b. it will decrease. c. it will stay the same. d. it will oscillate between extremely high and low values. e. relative humidity has no relationship to temperature.

A divergent boundary occurs when two tectonic plates move away from each other. Along these boundaries, lava spews from long fissures and geysers spurt super heated water. Frequent earthquakes strike along the rift. Beneath the rift, magma—molten rock—rises from the mantle. It oozes up into the gap and hardens into solid rock, …

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Assume that you are a participant in latané and darley’s (1968) experiment examining when people help. you believe that there are four other people participating with you in a discussion, although you are isolated in a booth to ensure privacy. when you are listening to one of the other participants talk, you hear him beginning to have a seizure. if you behave like the typical subject in latané and darley’s research, what are you most likely to do

This is a Discussion so the answer need to be more than 5 sentences. Thanks for the participants, and thank you (the reader) to be what you are now, you are the best, you are what do you want to be, the successful business man, the best pilot, the talented doctor etc… If you …

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What is the angle of rotation from wx to w’x’? Assume that the center of rotation is the origin. a. 90° counterclockwise b. 180° counterclockwise c. 270° counterclockwise d. 360° counterclockwise

Answer: 1)S in degrees 2) S in radians 3) 4) (degrees) (radians) Step-by-step explanation: Hi there, since you’ve mentioned a Ferris wheel. It’s important have at hand some important formulas. To measure the central angle, we derive it from this formula: 1)The measure of the central angle in degrees: For …

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How many ways can a president, vice-president, secretary, and treasurer be chosen from a club with 9 members? assume that no member can hold more than one office?

Let the boxes be Box 1, Box 2, Box 3.  consider the 3 white balls. They can be all of them in one box: (3, 0, 0) (3 in Box 1, 0 in box 2 and 0 in box 0)(0, 3, 0)(0, 0, 3) We can have 2 in one …

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A quantity of gas has a volume of 0.20 cubic meter and an absolute temperature of 333 degrees kelvin. When the temperature of the gas is raised to 533 degrees kelvin, what is the new volume of the gas? (Assume that there’s no change in pressure.) A. 0.0006 m3 B. 0.3198 m3 C. 0.2333 m3 D. 0.2146 m3

Answer: The correct answer is solar cell. Explanation: When energy is changed from one form to another, some of the energy is lost to the surroundings as waste thermal energy. From the given options, Electric drill: Electric drill converts the electrical energy into mechanical energy. When the drill break the …

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How many seconds are there in 2500 years? (assume 1 year=365 days) express your answer using three significant figures

Answer : The final volume of gas is, 22.2 L Explanation : Combined gas law is the combination of Boyle’s law, Charles’s law and Gay-Lussac’s law. The combined gas equation is, where, = initial pressure of gas = 1.5 atm = final pressure of gas = 0.9 atm = initial …

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Assume that black beans and rice are consistently in the diet of one particular family. how could you tell if these goods were complements, substitutes, or unrelated goods?

Given the underground nature of trafficking, the consequences of trafficking are hidden and difficult to see. Trafficked persons often have limited access to basic necessities such as safety, food, sleep, hygiene, and medical care. The effects of trafficking vary depending on the type of trafficking and the specific situation. Given …

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Assume that sophie decides to discontinue this product line. by how much will overall company net income change

Posted in Business It seems that you have missed the necessary information for this question to be answered, but anyway, I have found it, and according to the given data, overall company net income that will change would be will INCREASE by $2,500 if the product line is discontinued. Hope this …

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Tom and his bothers caught 100 fish on a weeklong fishing trip. The total weight of the fish was 235 pounds write an expression that will find the weight of one fish . Assume that the weight of each fish was the same .

Had to search up word gradient since i didnt know what it meant LUL! Equation of a line is y = mx + b You have m, which is the gradient so all you need is b. To do this, sub in the point (2,-5) as x and y to …

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The solubility of co2 in water at 1.22 atm is 0.54 g/l. what is the solubility of carbon dioxide at 1.86 atm? assume that temperature is constant.

Answer: In the given equation, there are 8 atoms of carbon, 26 atoms of oxygen and 20 atoms of hydrogen on each side of the equation. Explanation: Law of conservation of mass states that mass can neither be created nor be destroyed but it can only be transformed from one …

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Assume that the following events are independent: • probability that a randomly selected person has red hair is 0.14 • probability that a randomly selected person has red hair and a female is 0.06 What is the probability that a randomly selected person is a female, given that the person selected has red hair? (round to hundredths)

Answer with explanation: When you roll a dice, once , having number from 1 to 6, probability of obtaining each number                                         When, you roll a dice 12 times, Probability of …

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Use the Laplace transform to solve differential equation dx/dt + 7x = 5cos(2t) Initial conditions: x(0) = 4, x'(0) = -4 Assume forcing functions are 0 prior to t = 0- …?

Use the Laplace transform to solve differential equation dx/dt + 7x = 5cos(2t) Initial conditions: x(0) = 4, x'(0) = -4 Assume forcing functions are 0 prior to t = 0- …?

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!!PLEASE READ THIS DIRECTIONS INCLUDED!! Please help a poor girl out with geometry lol !! the directions are: find the missing side. round to the nearest tenth. i know it has to do with tangents and stuff. the directions for 136 is determine if line AB is tangent to the circle. The directions for 138 is find the segment length indicated. assume that lines which appear to be tangent are tangent. the directions for 140 is solve for x. assume that lines which appear to be tangent are tangent

The correct answers are: – NATO was formed to protect its members from aggression by the Soviet Union; NATO was an organization that was supposed to protect the countries of interest by the Soviet Union, but also as a military force in order to push back the Soviet Union. – …

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