Mathematics problem solving
178175 questions • Page 106 / 3564
1) A home appraisal company would like to develop a regression model that would
1) A home appraisal company would like to develop a regression model that would predict the selling price of a house based on the age of the house in years (Age), the living area …
1) A home appraisal company would like to develop a regression model that would
1) A home appraisal company would like to develop a regression model that would predict the selling price of a house based on the age of the house in years (Age), the living area …
1) A hot metal object is submerged in cold water. The rate at which the object c
1) A hot metal object is submerged in cold water. The rate at which the object cools (in degrees per minute) is a function f (t) of time. Which quantity is represented by the inte…
1) A kite 100feet above the ground moves horizontally at a speed of 2 feet/secon
1) A kite 100feet above the ground moves horizontally at a speed of 2 feet/second At what rate is the angle between the string and the horizontal decreasing when 300 feet of strin…
1) A lamina occupies the part of the disk x 2 + y 2 9 in the first quadrant. Fin
1) A lamina occupies the part of the disk x2 + y2 9 in the first quadrant. Find the center of mass of the lamina if the density at any point is proportional to the square of its d…
1) A large jetliner with a wingspan of 40 m flies horizontally and due north at
1) A large jetliner with a wingspan of 40 m flies horizontally and due north at a speed of 300 m/s in a region where the magnetic field of earth is 60 uT directed 50 degrees below…
1) A local inn asked customers to rate their stays on a scale of 1-10. The follo
1) A local inn asked customers to rate their stays on a scale of 1-10. The following list shows the ratings given by the last 10 customers. a) Calculate the range. (Round to two d…
1) A loop of area 0.250 m^2 is in a uniform 0.020 T magnetic field. If the flux
1) A loop of area 0.250 m^2 is in a uniform 0.020 T magnetic field. If the flux through the loop is 3.83 x 10 ^-3 T m^2, what angle does the normal to the plane of the loop make w…
1) A lottery game has thefollowing rules: pick 6 distinct numbers from a set of4
1) A lottery game has thefollowing rules: pick 6 distinct numbers from a set of49. The grand prize winner picks 6numbers out of 6 correctly. (i) What is the probability ofwinning …
1) A luxury retailer requires that customers receive personal attention from sal
1) A luxury retailer requires that customers receive personal attention from sales associates within 5 min of entering a store. To test for adherence to policy, an analyst from th…
1) A machine that fills milk cartons underfills a certain proportion p. If 50 ca
1) A machine that fills milk cartons underfills a certain proportion p. If 50 cartons are randomly selected from the outlet of this machine, find the probability that no more then…
1) A manufacturer can produce radios at a cost of $2 a piece. The radios have be
1) A manufacturer can produce radios at a cost of $2 a piece. The radios have been selling for $5 a piece, and at this price, consumers have been buying 5000 radios a month. The m…
1) A manufacturing company received an order of 1000 units for a product. The pr
1) A manufacturing company received an order of 1000 units for a product. The product requires 3 processing steps: sawing, drilling and bending. The scrap estimations based on his…
1) A manufacturing firm just received a shipment of 55 assembly parts, of slight
1) A manufacturing firm just received a shipment of 55 assembly parts, of slightly varied sizes, from a vendor. The manager knows that there are only 46 parts in the shipment that…
1) A manufacturing firm just received a shipment of 55 assembly parts, of slight
1) A manufacturing firm just received a shipment of 55 assembly parts, of slightly varied sizes, from a vendor. The manager knows that there are only 46 parts in the shipment that…
1) A new test for the detection of baldness is devised. It is applied to a popul
1) A new test for the detection of baldness is devised. It is applied to a population of 5,000 men who live in the USA. Based on the gold standard- namely, asking the subjects to …
1) A pair of dice (one red and one blue) are thrown. Each die has six sides. The
1) A pair of dice (one red and one blue) are thrown. Each die has six sides. The dice are fair, so each outcome is equally likely. What is the probability that the number that com…
1) A paper in a 1998 issue of American Journal of examined data r regarding the
1) A paper in a 1998 issue of American Journal of examined data r regarding the l had on the number of days after arthroscopic shoulder their sport. Computer output for the regres…
1) A plumber and his apprentice took a job at a house with water leaking into th
1) A plumber and his apprentice took a job at a house with water leaking into the basement from the 1st-floor shower. The plumber suspects that the leak is caused by water from th…
1) A political scientist surveys 30 of the current 150 representatives in a stat
1) A political scientist surveys 30 of the current 150 representatives in a state's congress. 2) The city of Raleigh has 9300 registered voters. There are two candidates for city …
1) A population of endangered freshwater threespine sticklebacks (Gasterosteus a
1) A population of endangered freshwater threespine sticklebacks (Gasterosteus aculeatus) live in a pond on Salt Spring Island off the BC coast. 396 individual are red-throated an…
1) A population of endangered freshwater threespine sticklebacks (Gasterosteus a
1) A population of endangered freshwater threespine sticklebacks (Gasterosteus aculeatus) live in a pond on Salt Spring Island off the BC coast. 396 individual are red-throated an…
1) A portfolio manager adds a new stock B that has the same expected return as t
1) A portfolio manager adds a new stock B that has the same expected return as the existing stock A but a standard deviation lower than stock A and has a correlation coefficient w…
1) A professional football player is retiring, and he is thinking about going in
1) A professional football player is retiring, and he is thinking about going into the insurance business. He plans to sell four types of policies— homeowner’s insurance, auto ins…
1) A public health researcher studying auto accidents questions whether broken b
1) A public health researcher studying auto accidents questions whether broken bones and concussions are independent events in injury accidents. From emergency room records he est…
1) A public health researcher studying auto accidents questions whether broken b
1) A public health researcher studying auto accidents questions whether broken bones and concussions are independent events in injury accidents. From emergency room records he est…
1) A raised bed planter with 3 sections is being designed. It will be made from
1) A raised bed planter with 3 sections is being designed. It will be made from a total of 72 feet of wooden boards and use an existing retaining wall as one edge, as depicted in …
1) A random sample is drawn from a normally distributed population with mean = 3
1) A random sample is drawn from a normally distributed population with mean = 31 and standard deviation = 1.9. Use Table 1. Calculate the above probabilities for both sample size…
1) A random sample of 36 adult females is selected from a population with mean h
1) A random sample of 36 adult females is selected from a population with mean height 65 inches and s…
1) A random sample of 50 helmets was subjected to quality control testing. It wa
1) A random sample of 50 helmets was subjected to quality control testing. It was determined that 18 of those helmets did not meet the outgoing inspection requirements. Calculate …
1) A realtor has 20 residential listings under contract. The following table sho
1) A realtor has 20 residential listings under contract. The following table shows the number of days each of these 20 houses has been on the market as of today. Use the data to c…
1) A realtor in Atlanta tells one of his clients that the average increase in th
1) A realtor in Atlanta tells one of his clients that the average increase in the selling price of homes in Atlanta was $15,000 over the last year. The client thinks that the real…
1) A rectangular tank that is 4 meters long, 3 meters wide and 3 meters deep is
1) A rectangular tank that is 4 meters long, 3 meters wide and 3 meters deep is filled with a rubbing alcohol that has density 786 kilograms per cubic meter. In each part below, a…
1) A red die and a white die are rolled. Let event A = {4 on the red die} and ev
1) A red die and a white die are rolled. Let event A = {4 on the red die} and event B ={sum of dice is odd}. Of the 36 equally likely outcomes, 6 are favorable to A, 18 are favora…
1) A rehabilitation counselor used the number of visitors that patients receive
1) A rehabilitation counselor used the number of visitors that patients receive over the course of a week in the hospital to predict their daily levels of positive mood. The slope…
1) A researcher is interested in comparing the breaking strength of different la
1) A researcher is interested in comparing the breaking strength of different laminated beams made from 3 different types of glue and 3 varieties of wood. Work out an experiment t…
1) A researcher is interested in the effects of gender on alcohol use. What is t
1) A researcher is interested in the effects of gender on alcohol use. What is the independent variable(s)? 2) A researcher is interested in the effects of gender on alcohol use. …
1) A researcher is running an experiment on the effectiveness of three different
1) A researcher is running an experiment on the effectiveness of three different energy drinks. She randomly selects 60 individuals from the population and evenly splits them into…
1) A researcher wishes to determine whether people with high blood pressure can
1) A researcher wishes to determine whether people with high blood pressure can reduce their blood pressure by following a particular diet. Subjects were randomly assigned to eith…
1) A researcher wishes to determine whether people with high blood pressure can
1) A researcher wishes to determine whether people with high blood pressure can reduce their blood pressure by following a particular diet. Subjects were randomly assigned to eith…
1) A researeer randonly surveys 200 individuals. She asks those surveyed for the
1) A researeer randonly surveys 200 individuals. She asks those surveyed for their age and the 50 and over Can the researcher conehude that being 50 or older cuses you to prefer t…
1) A restaurant has three separate dining areas: the patio, the alcove, and the
1) A restaurant has three separate dining areas: the patio, the alcove, and the flli all. At question is whether the median dollar amount per customer is the same or different bet…
1) A resturant is offering a daily special entree with selection of 1 appetizer,
1) A resturant is offering a daily special entree with selection of 1 appetizer, 1 side dish and 1 desert. There are 4 appetizers, 5 side dishes and 2 deserts on the menu. a) In h…
1) A sample of 300 is classified by whether they are planning on attending an up
1) A sample of 300 is classified by whether they are planning on attending an upcoming school event (Yes/No) and their year in school (Freshman/Sophomore/Junior/Senior). The sampl…
1) A sample of difference scores has a mean of the differences = 5. Which combin
1) A sample of difference scores has a mean of the differences = 5. Which combination of factors is most likely to produce a significant difference. A. n = 4 with a variance of = …
1) A serial system is comprised of 5 components connected in series. In order fo
1) A serial system is comprised of 5 components connected in series. In order for the serial system to work, all five components must function correctly. Assume that each componen…
1) A serial system is comprised of 5 components connected in series. In order fo
1) A serial system is comprised of 5 components connected in series. In order for the serial system to work, all five components must function correctly. Assume that each componen…
1) A serial system is comprised of 5 components connected in series. In order fo
1) A serial system is comprised of 5 components connected in series. In order for the serial system to work, all five components must function correctly. Assume that each componen…
1) A serial system is comprised of 5 components connected in series. In order fo
1) A serial system is comprised of 5 components connected in series. In order for the serial system to work, all five components must function correctly. Assume that each componen…
1) A simple random sample of 100 observations was taken from a large population.
1) A simple random sample of 100 observations was taken from a large population. The sample mean and the standard deviation were determined to be 80 and 12 respectively. Using Exc…
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