Mathematics problem solving
178175 questions • Page 140 / 3564
1. A company would like to evaluate the time in years, that an employee spent at
1. A company would like to evaluate the time in years, that an employee spent at a company and the employee’s hourly pay, for 5 employees are listed in the table below. Calc…
1. A compnay that manufactures and sells ballet slippers is currently producing
1. A compnay that manufactures and sells ballet slippers is currently producing and selling 1200 pairs of slippers each month at an average cost of $4 per pair. At that production…
1. A confidence statement based on a probability sample of 1007 American adults
1. A confidence statement based on a probability sample of 1007 American adults says, “We are 95% confident that between 72% and 78% of all adult Americans believe that the countr…
1. A consultant knows that it will cost him $10K (K represents thousands of doll
1. A consultant knows that it will cost him $10K (K represents thousands of dollars) to fulfill a particular contract. The contract is to be put out for bids, and he believes that…
1. A consumer power analyst is hired by a company to investigate whether the pop
1. A consumer power analyst is hired by a company to investigate whether the popularity of a certain new product depends on the location of the consumers. The monthly averages of …
1. A consumer products company is formulating a new shampoo and is interested in
1. A consumer products company is formulating a new shampoo and is interested in foam height (measured in mm). Assume that foam height is normally distributed with a standard devi…
1. A continuous random variable can take on any value within a given interval on
1. A continuous random variable can take on any value within a given interval on the real line (or x-axis). T F 2. A standard norm…
1. A continuous random variable can take on any value within a given interval on
1. A continuous random variable can take on any value within a given interval on the real line (or x-axis). T F 2. A standard norm…
1. A cooler contains eleven sports drinks: five lemon-lime and six orange. Four
1. A cooler contains eleven sports drinks: five lemon-lime and six orange. Four of the lemon-lime and five of the orange drinks are cold. The others are still warm. You randomly g…
1. A correlation matrix(correlation coefficients and probability level under the
1. A correlation matrix(correlation coefficients and probability level under thehypothesis rho = 0) for a company’s sales force (age, yearsof service, and current sales) is g…
1. A correlation matrix(correlation coefficients and probability level under the
1. A correlation matrix(correlation coefficients and probability level under thehypothesis rho = 0) for a company’s sales force (age, yearsof service, and current sales) is g…
1. A correlational analysis can be calculated as the pattern of how the two vari
1. A correlational analysis can be calculated as the pattern of how the two variables change in value. Because the two variables are on different measurements, the scores need to …
1. A credit score measures a person\'s creditworthiness. Assume the average cred
1. A credit score measures a person's creditworthiness. Assume the average credit score for Americans is 686686. Assume the scores are normally distributed with a standard deviati…
1. A criminologist developed a test to measure recidivism, where low scores indi
1. A criminologist developed a test to measure recidivism, where low scores indicated a lower probability of repeating the undesirable behavior. The test is normed so that it has …
1. A criminologist interested in teen-age marijuana use conducted surveys of stu
1. A criminologist interested in teen-age marijuana use conducted surveys of students from two different high schools. At Partytime High, the mean number of times the student…
1. A criminologist interested in teen-age marijuana use conducted surveys of stu
1. A criminologist interested in teen-age marijuana use conducted surveys of students from two different high schools. At Partytime High, the mean number of times the student…
1. A cross-sectional study is a type of quasi-experimental study. True or false?
1. A cross-sectional study is a type of quasi-experimental study. True or false? 2. The 3 basic evaluation/ research designs are experimental, quasi experimental and observational…
1. A crossover trial is conducted to compare and experimental medication for mig
1. A crossover trial is conducted to compare and experimental medication for migraine headaches to a currently available medication. A total of 50 patients are enrolled in the stu…
1. A cube located in R^3 has one face in the plane x=-4. The vertices for this f
1. A cube located in R^3 has one face in the plane x=-4. The vertices for this face are: (-4,24), (-4,5,1), (-4,2,-2), (-4,-1,1). Determine all possible coordinates of the center …
1. A cube whose edges are 3 inches is paintedblue. The cube is then cut into sma
1. A cube whose edges are 3 inches is paintedblue. The cube is then cut into smaller cubes, all of whichhave edges that are 1 inch long. How many of the small cubeshave no paint o…
1. A data set includes 40 pulse rates of men, and those pulse rates have a mean
1. A data set includes 40 pulse rates of men, and those pulse rates have a mean of 67.3 beats per minute and a standard deviation of 10.3 beats per minute. Construct a 99% confide…
1. A day trader buys an option on a stock that will return $150 profit if the st
1. A day trader buys an option on a stock that will return $150 profit if the stock goes up today and lose $650 if it goes down. If the trader thinks there is a 80% chance that th…
1. A dean of a business school has fit a regression model to predict college GPA
1. A dean of a business school has fit a regression model to predict college GPA based on a student's SAT score (SAT_Score), the percentile at which the student graduated high sch…
1. A dean of a business school has fit a regression model to predict college GPA
1. A dean of a business school has fit a regression model to predict college GPA based on a student's SAT score (SAT_Score), the percentile at which the student graduated high sch…
1. A deck of cards has four suits; hearts, diamonds, clubs, and spades. Each sui
1. A deck of cards has four suits; hearts, diamonds, clubs, and spades. Each suit has an ace, king, queen, jack, and the numbers two through ten. If the deck is well suffled, what…
1. A die is rolled one thousand times. The percentages of aces should be around
1. A die is rolled one thousand times. The percentages of aces should be around _________, give or take ___________ or so. (a) The first step in solving this problem is i. Computi…
1. A die is rolled one thousand times. The percentages of aces) should be around
1. A die is rolled one thousand times. The percentages of aces) should be around , give or take or so. (25 points) (a) The first step in solving this problem is i. Computing the S…
1. A die is rolled. The set of equally like outcomes is(1,2,3,4,5,6) Find the pr
1. A die is rolled. The set of equally like outcomes is(1,2,3,4,5,6) Find the probability of getting a 7. 2. The table below states the proability for the outcomes ofthe sample sp…
1. A die is rolled. The set of equally like outcomes is(1,2,3,4,5,6) Find the pr
1. A die is rolled. The set of equally like outcomes is(1,2,3,4,5,6) Find the probability of getting a 7. 2. The table below states the proability for the outcomes ofthe sample sp…
1. A dietician wishes to see if a person\'s cholesterol levelwill change if the
1. A dietician wishes to see if a person's cholesterol levelwill change if the diet is supplememted by a certain mineral. Sixsubjects participate in the dietician's study. The sub…
1. A dietician wishes to see if a person\'s cholesterol levelwill change if the
1. A dietician wishes to see if a person's cholesterol levelwill change if the diet is supplememted by a certain mineral. Sixsubjects participate in the dietician's study. The sub…
1. A dietician wishes to see if a person\'s cholesterollevel will change if the
1. A dietician wishes to see if a person's cholesterollevel will change if the diet is supplememted by a certain mineral.Six subjects participate in the dietician's study. The sub…
1. A dietician wishes to see if a person\'s cholesterollevel will change if the
1. A dietician wishes to see if a person's cholesterollevel will change if the diet is supplememted by a certain mineral.Six subjects participate in the dietician's study. The sub…
1. A digit is rotatable if it is a recognizable digit when rotated 180. You can
1. A digit is rotatable if it is a recognizable digit when rotated 180. You can assume the 1. A digit is rotatable f it is a recognizable digit when rotated 180. assume the only r…
1. A discount clothing store buys shirts and slacks with a list price of $12,750
1. A discount clothing store buys shirts and slacks with a list price of $12,750. If the wholesaler trade discounts of 15/25/15, find the single equivalent discount. 2. You sign a…
1. A distance-measuring telescope makes inaccurate measurements with standard de
1. A distance-measuring telescope makes inaccurate measurements with standard deviation =106 kilometers. To deal with the inaccurracy we will take the average of many different me…
1. A distance-measuring telescope makes inaccurate measurements with standard de
1. A distance-measuring telescope makes inaccurate measurements with standard deviation =107 kilometers. To deal with the inaccurracy we will take the average of many different me…
1. A distribution has a mean of 60.0 and a standard deviation of 4.3. What perce
1. A distribution has a mean of 60.0 and a standard deviation of 4.3. What percentage of scores fall between 62 and 65? 10.3% 69.62% 3% 19.62% 2. Which of the following is NOT tru…
1. A distribution of values is normal with a mean of 140 and a standard deviatio
1. A distribution of values is normal with a mean of 140 and a standard deviation of 2. Find the interval containing the middle-most 30% of scores: Enter your answer using interva…
1. A distribution of values is normal with a mean of 140 and a standard deviatio
1. A distribution of values is normal with a mean of 140 and a standard deviation of 2. Find the interval containing the middle-most 30% of scores: Enter your answer using interva…
1. A doctor collects a large set of heart rate measurements that approximately f
1. A doctor collects a large set of heart rate measurements that approximately follow a normal distribution. He only reports 3 statistics, the mean = 110 beats per minute, the min…
1. A drawer contains 4 purple socks and 6 orange socks. You reach in and randoml
1. A drawer contains 4 purple socks and 6 orange socks. You reach in and randomly grab a sock, then repeat the process until you have removed all 10 socks from the drawer. Define …
1. A drawer contains 4 purple socks and 6 orange socks. You reach in and randoml
1. A drawer contains 4 purple socks and 6 orange socks. You reach in and randomly grab a sock, then repeat the process until you have removed all 10 socks from the drawer. Define …
1. A drug manufacturer wants to make sure that 10m1 vials of testosterone cypion
1. A drug manufacturer wants to make sure that 10m1 vials of testosterone cypionate are properly filled on the assembly line. A simple random sample of 78 vials was obtained and t…
1. A factory for a company produces armils made out of orichalcum. The factory\'
1. A factory for a company produces armils made out of orichalcum. The factory's costs per week are 5-o(t) p(t), where o(t) is the cost of orichalcum ore by the pound at time t (w…
1. A fair coin is flipped 9 times. What is the probability of getting exactly 6
1. A fair coin is flipped 9 times. What is the probability of getting exactly 6 heads? 2. Suppose that 10,000 U.S. licensed drivers are randomly selected. a. How many would you ex…
1. A fair dice is thrown 5 times. What is the probability of getting 1 dots out
1. A fair dice is thrown 5 times. What is the probability of getting 1 dots out of these 5 rolls? Keep 5 significant digits 2. A fair dice is thrown once. A. What is the cardinali…
1. A far die is rolled five times. a. What is the probability of getting five 6?
1. A far die is rolled five times. a. What is the probability of getting five 6?s in a row? b. What is the probability of getting all even numbers? 2. Network Reliability: In the …
1. A farm and garden supply store sells fertilizer in 50 pound bags. For each cu
1. A farm and garden supply store sells fertilizer in 50 pound bags. For each customer purchasing fertilizer the probability distribution for the number of bags purchased is given…
1. A farm and garden supply store sells fertilizer in 50 pound bags. For each cu
1. A farm and garden supply store sells fertilizer in 50 pound bags. For each customer purchasing fertilizer the probability distribution for the number of bags purchased is given…
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Mathematics problem solving
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