Mathematics problem solving
178175 questions • Page 142 / 3564
1. A large hotel purchased 200 new color televisions several months ago: 80 of o
1. A large hotel purchased 200 new color televisions several months ago: 80 of one brand and 60 of each of two other brands. Records were kept for each set as to how many service …
1. A large jar contains 50 blue marbles and 50 red marbles. How many marbles mus
1. A large jar contains 50 blue marbles and 50 red marbles. How many marbles must be drawn randomly to ensure that you have three marbles of the same color 2. A ?ve person commit…
1. A large national survey shows that the waiting times for fast food restaurant
1. A large national survey shows that the waiting times for fast food restaurants is approximately normally distributed with a mean of = 3.4 minutes and a standard deviation of = …
1. A large retail company encourages its employees to get customers to apply for
1. A large retail company encourages its employees to get customers to apply for the store credit card. Below is the distribution for X = number of credit card applications receiv…
1. A large school district in Tennessee wants to estimate the average SAT score
1. A large school district in Tennessee wants to estimate the average SAT score of this year’s graduating class. The district takes a simple random sample of 100 seniors. The samp…
1. A large school district is considering the adoption of a new policy that woul
1. A large school district is considering the adoption of a new policy that would require elementary students to pass an exam before being promoted to the next grade. The PTA want…
1. A large school district is considering the adoption of a new policy that woul
1. A large school district is considering the adoption of a new policy that would require elementary students to pass an exam before being promoted to the next grade. The PTA want…
1. A large species of tarantula, the Brazilian Giant Tawny Red, has 2 body parts
1. A large species of tarantula, the Brazilian Giant Tawny Red, has 2 body parts, the abdomen and cephalothorax. The cephalothorax is covered by a shell called the carapace. Carap…
1. A large tank contains 8000 liters of water in which 410 grams of salt has bee
1. A large tank contains 8000 liters of water in which 410 grams of salt has been dissolved. At time t = 0 , water containing 4.6 grams of salt per liter begins flowing into the t…
1. A linear model for the data in the table is shown in the scatter plot 1 12 2
1. A linear model for the data in the table is shown in the scatter plot 1 12 2 12 3 9 4 10 5 6 14 13 12 10 0 (a) Which two points should you use to find the equation of the model…
1. A linear regression 2. In a regression model, the slope represents the 12. A
1. A linear regression 2. In a regression model, the slope represents the 12. A perfect positive correlation means 13. The value of the correlation coefficient is zero if the poin…
1. A linear regression was run to examine the effect of time spent studying per
1. A linear regression was run to examine the effect of time spent studying per day (in minutes) on test grades. 45 students reported their grade on a math test (in points, rangin…
1. A linear regression... A. gives a relationship between three variables that c
1. A linear regression... A. gives a relationship between three variables that can be described by a line. B. gives a relationship between two variables that cannot be described b…
1. A list of 8 numbers is formed by beginning with twogiven numbers. Each new nu
1. A list of 8 numbers is formed by beginning with twogiven numbers. Each new number in the list is the product of thetwo previous numbrs. Fine the first number if the last threea…
1. A list of four digits is selected at random from the set {0, 1, 2, 3, 4, 5, 6
1. A list of four digits is selected at random from the set {0, 1, 2, 3, 4, 5, 6, 7, 8, 9}. What is the probability that the four digits will be distinct (all different)? What is …
1. A local 4-H club is holding a fundraiser in which they plan to raffle off a s
1. A local 4-H club is holding a fundraiser in which they plan to raffle off a side of beef, with 300 tickets available at $10 each. Assuming they sell all their raffle tickets, w…
1. A local electronics retailer recently conducted a study on purchasers of larg
1. A local electronics retailer recently conducted a study on purchasers of large screen televisions. The study recorded the type of television and the credit account balanc…
1. A local indian restaurant advertises home delivery times of 30 minutes. To mo
1. A local indian restaurant advertises home delivery times of 30 minutes. To monitor effectiveness of this promise the restaurant manager monitors the time that the order was rec…
1. A machine is currently worth $120,000 and will be depreciated linearly over a
1. A machine is currently worth $120,000 and will be depreciated linearly over an 8 years period, at which time it will be worth $25,000 scrap. (A) Find the depreciation function,…
1. A machine that fills milk bottles is supposed to have a mean amount of milk e
1. A machine that fills milk bottles is supposed to have a mean amount of milk equal to 32 ounces with a standard deviation of 0.1 ounces. Forty-nine bottles were randomly checked…
1. A machine that grinds valvesto length was moved from one location to another
1. A machine that grinds valvesto length was moved from one location to another on the shop floor.10 random samples taken before the move had a sample mean of 20.00mm and st…
1. A machine that grinds valvesto length was moved from one location to another
1. A machine that grinds valvesto length was moved from one location to another on the shop floor.10 random samples taken before the move had a sample mean of 20.00mm and st…
1. A magician holds a standard deck of cards and draws one card. The probability
1. A magician holds a standard deck of cards and draws one card. The probability of drawing the ace of diamonds is 1/52. What method of assigning probabilities was used? 2. An exp…
1. A major tire manufacturer sends out a recall for a particular tire it makes b
1. A major tire manufacturer sends out a recall for a particular tire it makes because 2% of these tires are defective. If you take a random sample of 600 of these tires, what is …
1. A major tire manufacturer sends out a recall for a particular tire it makes b
1. A major tire manufacturer sends out a recall for a particular tire it makes because 2% of these tires are defective. If you take a random sample of 600 of these tires, what is …
1. A manufacturer believes that their shovel with a perforated blade requires le
1. A manufacturer believes that their shovel with a perforated blade requires less energy than a traditional shovel when digging in red Virginia clay soil. To test this theory, 13…
1. A manufacturer of industrial chisels is interested in determining how the ang
1. A manufacturer of industrial chisels is interested in determining how the angle at which the cutting edge is sharpened affects tool abrasion. To answer this question, engineers…
1. A manufacturer of infant formula is running anexperiment using the standard (
1. A manufacturer of infant formula is running anexperiment using the standard (control) formulation and two newformulations, A and B. The goal is to boost the immune system inyou…
1. A manufacturer of infant formula is running anexperiment using the standard (
1. A manufacturer of infant formula is running anexperiment using the standard (control) formulation and two newformulations, A and B. The goal is to boost the immune system inyou…
1. A manufacturer produces a batch ofmemory chips (RAM) and measures the mean-ti
1. A manufacturer produces a batch ofmemory chips (RAM) and measures the mean-time-between-failures(MTBF). The manufacturer then changes a manufacturing process andproduces an…
1. A manufacturer produces a batch ofmemory chips (RAM) and measures the mean-ti
1. A manufacturer produces a batch ofmemory chips (RAM) and measures the mean-time-between-failures(MTBF). The manufacturer then changes a manufacturing process andproduces an…
1. A manufacturing firm wants to determine if there is a difference in the price
1. A manufacturing firm wants to determine if there is a difference in the prices charged by two competing shipping companies State the null and alternative hypotheses. Company A …
1. A manufacturing process has a defect rate of 10%, meaning that 10% of the ite
1. A manufacturing process has a defect rate of 10%, meaning that 10% of the items produced are defective. If batches of 80 items are produced, the mean number of defects per batc…
1. A market researcher wanted to determine whether the proportion of beer drinke
1. A market researcher wanted to determine whether the proportion of beer drinkers who preferred Peroni increased as a result of an advertising campaign. A random sample of 1,200 …
1. A market researcher wanted to determine whether the proportion of beer drinke
1. A market researcher wanted to determine whether the proportion of beer drinkers who preferred Peroni increased as a result of an advertising campaign. A random sample of 1,200 …
1. A market researcher wants to determine wheather a new model of a personal com
1. A market researcher wants to determine wheather a new model of a personal compuiter that had been advertised on a late -night talk show had achieved more brand-name recognition…
1. A market researcher wants to determine wheather a new model of a personal com
1. A market researcher wants to determine wheather a new model of a personal compuiter that had been advertised on a late -night talk show had achieved more brand-name recognition…
1. A market researcher wants to know which of two perfumes people prefer: Ocean
1. A market researcher wants to know which of two perfumes people prefer: Ocean Breeze or Summer Rain. One hundred volunteers are selected. Each volunteer is blindfolded and then …
1. A marketing expert for a publishing house wants to measure reader preference
1. A marketing expert for a publishing house wants to measure reader preference for 5 different covers of the same paperback novel. Five newsstands are selected at random and the …
1. A marketing expert for a publishing house wants to measure reader preference
1. A marketing expert for a publishing house wants to measure reader preference for 5 different covers of the same paperback novel. Five newsstands are selected at random and the …
1. A marketing research company surveyed the age and marital status of 140 custo
1. A marketing research company surveyed the age and marital status of 140 customers of a beach nightclub. The result of the survey is summarized in the following frequency table:…
1. A marketing specialist at a radio station wants to show that more people hear
1. A marketing specialist at a radio station wants to show that more people hear about local businesses on the air than from billboards or direct mailings. She creates three diffe…
1. A mass is suspended by a spring attached to the ceiling. Initially, the mass
1. A mass is suspended by a spring attached to the ceiling. Initially, the mass rests at its equilibrium point. The mass is pulled down 10.0 cm, held steady, and released. A high …
1. A mass of 1 slug, when attached to a spring, stretches it 2 feet and then com
1. A mass of 1 slug, when attached to a spring, stretches it 2 feet and then comes to rest in the equilibrium position. Starting at t = 0, an external force equal to f(t) = 10 sin…
1. A mayor is concerned about the percentage of cityresidents who express diappr
1. A mayor is concerned about the percentage of cityresidents who express diapproval of his job performance. Hispolotical committee pays for a newspaper ad, hoping it will keepthe…
1. A mayor is concerned about the percentage of cityresidents who express diappr
1. A mayor is concerned about the percentage of cityresidents who express diapproval of his job performance. Hispolotical committee pays for a newspaper ad, hoping it will keepthe…
1. A meaningful reason in order to eliminate an outlier from a dataset is the ou
1. A meaningful reason in order to eliminate an outlier from a dataset is the outlier is greater than the standard deviation. (TRUE/FALSE) 2)An outlier in a dataset is an extreme …
1. A mechanism by which other modules, such as I/O and memory, may interrupt the
1. A mechanism by which other modules, such as I/O and memory, may interrupt the normal sequencing of the processor is called (A) Communication (B) Trap (C) Interrupt (D) I/O (E) …
1. A medical facility was testing their new cardiac treatment program, they test
1. A medical facility was testing their new cardiac treatment program, they tested the program on patients on severe conditions. The program shows that the treatment is highly suc…
1. A medical researcher gathers data to compare the success rates (proportions o
1. A medical researcher gathers data to compare the success rates (proportions of successful treatments) of two different chemotherapy treatments. The researcher hopes to show tha…
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