Mathematics problem solving

1) A Ferris wheel with a radius of 10 m is rotating at a rate of one revolution

1) A Ferris wheel with a radius of 10 m is rotating at a rate of one revolution every 2 minutes. How fast is a rider rising when his seat is 16 m above ground level? ??? m/min 2) …

1) A MOD-16 ripple counter is holding the count 10112. What will the count be af

1) A MOD-16 ripple counter is holding the count 10112. What will the count be after 31 clock pulses? A) 11002 B) 10112 C) 10102 D) 10012 2) Which group of logic devices represents…

1) A \"D\" flip-flop with a PGT clock is in the CLEAR state. Which of the follow

1) A "D" flip-flop with a PGT clock is in the CLEAR state. Which of the following input actions will cause it to change states? A) CLK = PGT, D = 0 B) CLK = NGT, D = 1 C) CLK = PG…

1) A bag contains three red marbles, six green ones, one lavender one, four yell

1) A bag contains three red marbles, six green ones, one lavender one, four yellows, and two orange marbles. How many sets of four marbles include all the red ones? 2) A bag conta…

1) A ball on a string is pulled 6 inches below its rest position and then releas

1) A ball on a string is pulled 6 inches below its rest position and then released. The period of motion is 4 seconds. Write the equation for the ball’s simple harmonic motion. 2)…

1) A basketball team sells tickets that cost $10, $20, or, for VIP seats, $30. T

1) A basketball team sells tickets that cost $10, $20, or, for VIP seats, $30. The team has sold 3255 tickets overall. It has sold 203 more $20 tickets than $10 tickets. The total…

1) A batch of 30 semiconductor chips is inspected by choosing a sample of 4 chip

1) A batch of 30 semiconductor chips is inspected by choosing a sample of 4 chips. Assume 10 of the chips do not conform to customer requirements. Round your answers to the neares…

1) A body with mass m = 1/2 kg is attached to the end of a spring that is strech

1) A body with mass m = 1/2 kg is attached to the end of a spring that is streched 2 meters (m) by a force of 100 newtons (N). it is set in motion with initial position X0= 1 m an…

1) A bookstore has an annual demand for 28,000 copies of a best-selling book. It

1) A bookstore has an annual demand for 28,000 copies of a best-selling book. It costs $0.50 to store one copy for one year, and it costs $65 to place an order. Find the optimum n…

1) A box has a bottom with one edge 6 times as long as the other. If the box has

1)  A box has a bottom with one edge 6 times as long as the other. If the box has no top and the volume is fixed at V, what dimensions minimize the surface area? dimensions =   En…

1) A car traveling at a constant velocity of 60 miles/hour must come to a stop i

1) A car traveling at a constant velocity of 60 miles/hour must come to a stop in 150 feet using a constant rate of deceleration. What is the rate of deceleration that must be app…

1) A card is draw from a deck of cards. What is the probability of getting a red

1) A card is draw from a deck of cards. What is the probability of getting a red card, a jack, queen, or king? 2) The distribution of age of CEO'S is as follows: Age Frequency 21-…

1) A card is drawn from a standard deck of playing cards. What is the probabilit

1) A card is drawn from a standard deck of playing cards. What is the probability that the card is either a Queen, a King or an Ace? (Express your answer as a percent to the neare…

1) A careless student gives the following as a proof of the squeeze theorem. Fin

1) A careless student gives the following as a proof of the squeeze theorem. Find the flaw: "If lim sn - lim tn,then take the limits in the inequality to get L im r L. This can on…

1) A cellular transmission tower is designed for a \"50 year wind.\" This means

1) A cellular transmission tower is designed for a "50 year wind." This means that is there is a certain high wind velocity with a return period of 50 years. What is the probabili…

1) A cellular transmission tower is designed for a \"50 year wind.\" This means

1) A cellular transmission tower is designed for a "50 year wind." This means that is there is a certain high wind velocity with a return period of 50 years. What is the probabili…

1) A certain company sends 40% of its overnight mail parcels via express mail se

1) A certain company sends 40% of its overnight mail parcels via express mail service E1, 50% via express mail service E2 and the remaining via E3. Of those sent via E1 2% arrive …

1) A certain delivery system offers both express and standard delivery. Seventy-

1) A certain delivery system offers both express and standard delivery. Seventy-five percent of parcels are sent by standard delivery and 25% are sent by express. Of those sent st…

1) A certain dimension of a mass-produced mechanical part has a nominal value of

1) A certain dimension of a mass-produced mechanical part has a nominal value of 100 mm with acceptable tolerances of ± 1 mm. If the manufacturing process produces parts for which…

1) A class has 80 students. Test 2 had a class average of 78 and a variance of 4

1) A class has 80 students. Test 2 had a class average of 78 and a variance of 49. Answer the following 7 questions. (Assume Normal distribution). Assume a 90-80-70-60 = A-B-C-D s…

1) A class survey in a large class for first-year college students asked, About

1) A class survey in a large class for first-year college students asked, About how many hours do you study during a typical week? The mean response of the 463 students was x = 15…

1) A clinical trial is run to compare the effectiveness of an experimental drug

1) A clinical trial is run to compare the effectiveness of an experimental drug in reducing preterm delivery to a drug considered standard care and to placebo. Pregnant women are …

1) A coffee dispensing machine fills cups to amounts that are uniformly distribu

1) A coffee dispensing machine fills cups to amounts that are uniformly distributed. Specifically, if i select a small 12 oz coffee, the machine dispenses between 10 and 13 oz. of…

1) A committee of size 5 is to be selected at random form 5 chemists and 3 mathe

1) A committee of size 5 is to be selected at random form 5 chemists and 3 mathematicians. a) Find a formula for the probability distribution of the number of mathematicians on th…

1) A committee of size 5 is to be selected at random form 5 chemists and 3 mathe

1) A committee of size 5 is to be selected at random form 5 chemists and 3 mathematicians. a) Find a formula for the probability distribution of the number of mathematicians on th…

1) A company that sells eco-friendly cleaning products is concerned that only 18

1)   A company that sells eco-friendly cleaning products is concerned that only 18.5% of people who   use such products select their brand. A marketing director suggests that the …

1) A consultant makes frequent round trips from home in Los Angeles to Washingto

1) A consultant makes frequent round trips from home in Los Angeles to Washington, DC, 50% of the time the consultant travels on airline #1 , 30% of the time on airline #2, and th…

1) A cross-sectional study of injection drug use (IDU) and HIV infection identif

1) A cross-sectional study of injection drug use (IDU) and HIV infection identified an increased association between IDU and HIV infection as compared to non-IDU. The table below …

1) A cross-sectional study of injection drug use (IDU) and HIV infection identif

1) A cross-sectional study of injection drug use (IDU) and HIV infection identified an increased association between IDU and HIV infection as compared to non-IDU. The table below …

1) A cyclist accelerates from rest at a rate of 1.00 m/s2. How fast will a point

1) A cyclist accelerates from rest at a rate of 1.00 m/s2. How fast will a point on the rim of the tire (diameter = 80.0 cm) at the top be moving after 2.86 s? (image http://imgur…

1) A diagnostic test for Cat Scratch Fever has been developed, and administered

1) A diagnostic test for Cat Scratch Fever has been developed, and administered to a random sample of 1000 people, with the following outcomes: a) What is the positive predictive …

1) A diagnostic test for Cat Scratch Fever has been developed, and administered

1) A diagnostic test for Cat Scratch Fever has been developed, and administered to a random sample of 1000 people, with the following outcomes: a) What is the positive predictive …

1) A diagnostic test for a disease is said to be 90% accurate in that if a perso

1) A diagnostic test for a disease is said to be 90% accurate in that if a person has the disease, the test will detect it with probability 0.9. Also, if a person does not have th…

1) A diagnostic test for a disease is said to be 90% accurate in that if a perso

1) A diagnostic test for a disease is said to be 90% accurate in that if a person has the disease, the test will detect it with probability 0.9. Also, if a person does not have th…

1) A discrete random variable X has the following probability distribution: Comp

1) A discrete random variable X has the following probability distribution: Compute each of the following quantities (give the exact numbers): (a) P(18)= (b) P(X>18)= (c) P(X?1…

1) A dish contain 1 penney, 1 nickle and 1 dime. A batch of two coins is drawn o

1) A dish contain 1 penney, 1 nickle and 1 dime. A batch of two coins is drawn out, and you're told that their total valur is 7 cents or more. what is the probability that the two…

1) A factory is production cars, assembly line A produces 5% hybrid cars, assemb

1) A factory is production cars, assembly line A produces 5% hybrid cars, assembly line B produces 8% hybrid cars, and assembly line C produces 10% hybrid cars. Of the total outpu…

1) A fair coin was flipped 3 times and landed heads 3 times. What is the probabi

1) A fair coin was flipped 3 times and landed heads 3 times. What is the probability of a head on the next toss? a) 0.6 b) 0.4 c) 12 d) none of the previous 2) When an unmanned NA…

1) A firm believes the internal rate of return for its proposedinvestment can be

1) A firm believes the internal rate of return for its proposedinvestment can best be described by a normal distribution with mean32% and standard deviation 3%. What is the probab…

1) A firm believes the internal rate of return for its proposedinvestment can be

1) A firm believes the internal rate of return for its proposedinvestment can best be described by a normal distribution with mean32% and standard deviation 3%. What is the probab…

1) A foreman for an injection-molding firm admits that on 22% of his shifts, he

1) A foreman for an injection-molding firm admits that on 22% of his shifts, he forgets to shut off the injection machine on his line. This causes the machine to overheat, increas…

1) A four-year study of bottled water brands conducted by Natural resources defe

1) A four-year study of bottled water brands conducted by Natural resources defense council found that 80% of bottled water is just tap water packaged in a bottle. In a sample of …

1) A four-year study of bottled water brands conducted by Natural resources defe

1) A four-year study of bottled water brands conducted by Natural resources defense council found that 80% of bottled water is just tap water packaged in a bottle. In a sample of …

1) A group of medical professionals is considering the construction of a private

1) A group of medical professionals is considering the construction of a private clinic. If the medical demand is high ( i.e., there is a favorable market for the clinic), the phy…

1) A group of researchers are interested in determining whether twins have the s

1) A group of researchers are interested in determining whether twins have the same or different hourly wages. The twin wage dataset contains hourly wage data from a set of 149 pa…

1) A group of researchers are interested in determining whether twins have the s

1) A group of researchers are interested in determining whether twins have the same or different hourly wages. The twin wage dataset contains hourly wage data from a set of 149 pa…

1) A grower believes that one in five of his citrus trees are infected with the

1) A grower believes that one in five of his citrus trees are infected with the citrus red mite. How large a sample should be taken if the grower wishes to estimate the proportion…

1) A growing number of younger employees have been participating in their compan

1) A growing number of younger employees have been participating in their company's retirement plans in recent yeras. According to Vanguard Group, 44% of employees under the age o…

1) A hare and a coyote live in the same area. Within this area there is the wood

1) A hare and a coyote live in the same area. Within this area there is the woods, the field and the lake. The coyote moves between the three areas each day with the following pro…

1) A hippogriff rancher wants to enclose a rectangular area and then divide it i

1) A hippogriff rancher wants to enclose a rectangular area and then divide it into four pens with fencing parallel to one side of the rectangle (see the figure below). He has 880…