S
  1. study help
  2. subject categories
  3. sciences
  4. mathematics
  5. march 2023
  6. 11

Mathematics Questions and Answers March 11, 2023

Expert-verified solutions to help you succeed

Math 2311 Written Homework 11 (Sections 8.1 - 8.2) Name:__________________________________ PeopleSoft ID:_______________ Instructions: Homework will NOT be accepted through email or in person. Homework must be submitted through CourseWare BEFORE the deadline. Print out this file and complete the problems. Use blue or black ink or a dark pencil.

Activity 8.6 - Module Problems Complete the following problems and submit the results in either a Microsoft Word document or a Microsoft Excel spreadsheet. If you choose to use an Excel spreadsheet, place each problem on a separate sheet and label the tab with problem number. Save your document with a descriptive file name, including the

Assume that the heights of women are normally distributed with a mean of 63.5 inches and a standard deviation of 2.5 inches. Find Q 3 , the third quartile that separates the bottom 75% from the top 25%. a. 66.4 b. 65.2 c. 66.7 d. 61.8 For the population of one town, the number of siblings, x, is a random variable whose relative frequency histogram

Multiply and simplify. Assume that the variables represent positive real numbers.Root (4m^5n^p)(3mn^2)

Which of the numbers that follow could represent a probability? I. 95% II. -25%

Consider the standard normal distribution. a) Use the Z table to verify that q 1 is approximately -0.67 and q 3 is approximately 0.67. b) Find the interquartile range for Z, and explain what this means. c) Verify that the inner fences for Z are f 1 = -2.68 and f 3 = 2.68. d) Verify that the probability that a standard normal random variable will

Module 2 Problem set: Hello rudra. Long timed no see. How do locate data set Drinks.sav open SPSS following steps in section 2.11 of the IBM SPSS instruction to answer 1-3 in the Activity based on your observation of the SPSS output? How do you locate data set Census.sav if you open with SPSS and follow the steps in section 3.9 Learning Activity

Consider the following statistical studies. Which method of data collection would likely be used to collect data for each study? Explain your selection. What is the population of interest? Would you take a census or use a sampling? Explain. If you would use a sampling, decide what type of sampling technique you would use. Explain your reasoning.

Name:_______________________________ GSI:________________________________ Political Science 3 Homework # 4 Note: It is highly recommended that you show your work. This means setting up the problem by writing out the equation(s) being used (if an equation is involved) and showing that you know what to plug into the equation(s). Partial credit may

Consider the parametric curve given by the equations: x(t)=t^22t48 y(t)=t^22t+17 How many units of distance are covered by the point P(t) = (x(t),y(t)) between t=0, and t=14 ?

28. Given the following data, ifMAD= 3.25, determine what the actual demand must have been in time period #2? Time Period Actual Demand Forecast Demand 1 11 13 2 ? 15 3 16 14 4 15 18 Select one: a. 11 or 19 b. 10 or 20 c. 9 or 21 d. 13 or 17 e. 12 or 18

Determine whether the random variable is discrete or continuous. In eachcase, state the possible values of the random variable.(a) The number of fish caught during a fishing tournamentfishcaughtduringafishingtournament.(b) The weight of a Upper T dash bone steakweightofaT-bonesteak. (a) Is the number of fish caught during a fishing

Batsman A mean runs for 60 innings is 30 and Batsman B mean runs for 40 inning is 25. Then, What is the combined average runs for two batsman

Suppose that the distance of fly balls hit to the outfield (in baseball) is normally distributed with a mean of 250 feet anda standard deviation of 50 feet. We randomly sample 49 fly balls. a. If X= average distance in feet for 49 fly balls, then X~ _______(_______,_______) b. What is the probability that the 49 balls traveled an average of less

Which one of the following is INCORRECT about the significance level? Question 10 options: a) The significance level is the probability of making the mistake of rejecting the null hypothesis when it is true. b) The significance level is the probability of making the type I error. c) The significance level is the probability of making the mistake

Predicting Total Attendance at the Prescott Maple's Home Games Game # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Total Attendance Dependent Variable 872 893 4623 1452 645 3421 3871 2431 2976 1398 2740 870 2156 1489 2103 2503 1913 1567 1445 2272 Regular Ticket Sales 345 369 2489 564 357 1589 1782 1003 1256 783 2401 1555 625 1677 1271 1360

Please explain step by step 1. Let n(E) be the number of outcomes in an event E. Given n(E) = 21 and P(E) = 0.7, then n(E') = 2. Given n(E) = 21 and P(E) = 0.7, then O(E) =

A student scored 71 points on a test where the mean score was 79 and the standard deviation was 6. What is the student's z-score? a. 13.17 b. 0.22 c. 0.22 d. 1.33

decide whether you can use a normal distribution to approximate the binomial distribution. if you can, use the normal distribution to approximate the indicated probabilities and sketch their graphs. If you cannot, explain why and use a binomial distribution to find the indicated probabilities A survey of U.S. adults ages 18-24 found that 34% get

One Suppose that you record the daily high temperature and the daily amount of ice cream sold by an ice cream vendor at your favorite beach this summer, starting on Memorial Day weekend and ending on Labor Day weekend. Would you expect to find a positive or negative association between these variables? Explain briefly. Question Two A researcher

A patient's temperature change, T due to a dose D of a drug in milligrams (mg) is given by T = (5 - D/3) D^2, for D> 0, with T in degrees Celsius. What dosage D maximizes the temperature change?

The community hospital is studying its distribution of patients. A random sample of 311 patients presently in the hospital gave the following information: Type of Patient Old Rate of Occurrences Present Number of Occurrences Maternity Ward 20% 73 Cardiac Ward 32% 86 Burn Ward 10% 29 Children's Ward 15% 48 All Other Wards 23% 75 Test the claim at

From a population of cans of coffee marked "12 ounces", a random sample of 20 cans was selected and the contents of each can were weighed. The sample revealed a mean of 11.80 ounces and a sample standard deviation of 0.5 ounces. At a 5%(0.05) level of significance, test to see if the mean of the population is at least 12 ounces. What is your

the expected frequencies across all cells of a chi square should?

proof that sigma(xi-x bar)=0....................................

Regression generally assumes a ___________line relationship. curved vertical straight none of the above

Linda is considering opening a bed and breakfast inn near Santa Fe, New Mexico. She thinks that the number of prospective guests per year follows an approximately normal distribution with mean u = 1600 and population standard deviation = 400. (a) She has estimated revenue and expenses and determined that she will break even if she has at least

Major cities around the world compete with each other to attract new businesses. Some of the criteria that businesses use to judge cities as potential locations for their headquarters might include the labor pool; the environment, including work, governmental, and living; the tax structure, the availability of skilled/educated labor, housing,

MATH399 Statistics Week 4 Lab Name: _______________________ Statistical Concepts: Probability Binomial Probability Distribution Calculating Binomial Probabilities Open a new Excel worksheet. 1. 2. 3. 4. 5. Open spreadsheet In cell A1 type \"success\" as the label Under that in column A, type 0 through 10 (these will be in rows 2 through 12) In

How do I set this up in excel Need to construct payoff table Daily sales of bread by Salvador Monella's Baking Company follow the historical pattern shown in the table below. It costs the bakery 50 cents to produce a loaf of bread, which sells for 95 cents. Any bread unsold at the end of the day is sold to the parish jail for 25 cents per loaf.

Senioritis" is a temporary, non-fatal illness afflicting thousands of high school and college seniors every year. Its chief symptom is a desire to be doing anything but schoolwork. A possible measure of the overall senioritis in a high school senior class is the percentage of seniors who miss school on "senior skip day." The histogram below

Please read the following scenario and answer the questions below. Use the data set below to complete this assignment. You may create your assignment using either Microsoft Word or Excel. When you have completed your assignment, use the following naming convention to name your file: The course number, your first initial, your last name, the unit

A survey was conducted by the local chapter of an environmental club regarding the ownership of alternative fuel vehicles (AFVs) among the members of the group. An AFV is a vehicle that runs on fuel other than petroleum fuels (petrol and diesel). It was found that of the 80 members of the club surveyed, 24 of them own at least one hybrid car, 10

Please help me to understand and solve the following problem. Thank you. ------------------------------------------------------------------------------------------------ Find the Gini coefficient of inequality for the nation with income distribution curve y = 0.5x^3 + 0.3x^2 + 0.2x, where y 100% is the percentage of national income earned by the

\f

Assume the random variable x is normally distributed with mean =88and standard deviation =4. Find the indicated probability. P(x <81)

The white wood material used for the roof of an ancient temple is imported from a certain country. The wooden roof must withstand as much as 100 centimeters of snow in the winter. Architects at a university conducted a study to estimate the mean bending strength of the white wood roof. A sample of 25 pieces of the imported wood were tested and

Ms. Wong is redecorating her office. She has a choice of 8 colors of paint, 3 kinds of curtains, 6 colors of carpet, and 2 styles of furniture. How many different ways are there to redecorate if she can choose two different colors of paint, one kind of curtain, one color of carpet, and one style of furniture?

Hi Rudra, could you please help me with some questions? please let me know when you are ready

suppose you are an operations manager for a plant that manufactures batteries . give an example of how you could use descriptive statistics to make better managerial decisions . give an example of how you could use inferential statistics to make better managerial decisions .

In a simple linear regression problem, the correlation coefficient r and the slope b 1 : must be equal to each other. must have the same sign. must have opposite signs. are not related. Linear regression can achieve which of the following? Identify how much variable y will change if variable x changes. Predict someone's Biostatistics grade from

Factor: 49-36w 2 Factor by grouping: 5x 3 + 7x 2 - 15x - 21 Factor: y 2 - 12y + 20 Factor: 3x 2 - 8x - 16

We are studying Martingales and I need help with the following: You play a gambling game in which you roll a single fair six-sided dice and receive $1 if 1 or 2 comes up, you get nothing if 3 or 4 comes up, and lose $1 if 5 or 6 comes up. You start with $10 and will play until either you have $30 or you lose everything. What is the probability you

A fast food company uses two management-training methods. Method 1 is a traditional method of training and Method 2 is a new and innovative method. The company has just hired 31 new management trainees. 15 of the trainees are randomly selected and assigned to the first method, and the remaining 16 trainees are assigned to the second training

1 )The college student senate is sponsoring a spring break Caribbean cruise raffle. The proceeds are to be donated to the Samaritan Center for the Homeless. A local travel agency donated the cruise, valued at $2000. The students sold 2544 raffle tickets at $5 per ticket. (a) Kevin bought thirty-two tickets. What is the probability that Kevin will

Discuss the statement and tell what possible misuse or misinterpretation may exist.In a study of patients with flu symptoms,each patient was found to have improved symptoms after taking vitamin C. Therefore,vitaminCcures the flu. Discuss the statement and tell what possible misuse or misinterpretation may exist. Choose the correct answer below. A.

A respondent was presented 18 hypothetical alternatives or profiles described on five attributes. The attributes are: i) Package Design (described on three levels); ii) Brand Name (described on three levels); iii) Price (described on three levels); iv) Good Housekeeping seal of approval (described on two levels); v) Money Back Guarantee (described

BUSI1013, Unit 6 Exercise, Billy Zmija 1. Assume that data contained in the BUSI1013-Numerical Data A.xls file is from a simple random sample of customers of a Canadian retailer. Use this data to answer the following: (4 Points) a. Develop a point estimate of the mean number of transactions for the retailer. 43.27 b. Develop a point estimate of

Use technology to help you test the claim about the population mean, , at the given level of significance, , using the given sample statistics. Assume the population is normally distributed. Claim: > 1260; = 0.09; = 195.67. Sample statistics: x = 1277.31, n = 300 -Calculate the standardized test statistic. The standardized test statistic is __

Take Home Test B (2.6 and Chapter 3) You don't need to print, scan, or submit page 5 (it just has images for reference for two problems) 1. Find dy/dx (or y') for the following: 4 x 2 2 y 2 + 3 x 2 y = 2 x . Show work. 2. Find the slope of the tangent line to the graph of work. 3. Determine where the function f ( x) = 3 x 3 + 5 y 2 + x = 1 at the

A vendor sells hot dogs, bags of potato chips, and soft drinks. A customer buys 3 hot dogs, 5 soft bags of potato chips, and 2 soft drinks for $13.00. The price of a hot dog is $2.00 more than the price of a bag of potato chips. The cost of a soft drink is $3.50 less than the price of two hot dogs. Find the cost of each item.

A sample of n = 16 scores is selected from a population withm= 80 withs= 20. On average, how much error would be expected between the sample mean and the population mean? 20 points 5 points 4 points 1.25 points Flag this Question Question 21pts For a population with = 80 and = 20, the distribution of sample means based on n = 16 will have an

1. You are putting different additives into a fuel. Looking at the preliminary data it appears from the averages that Fuel C's additive is increasing mileage. Using Minitab, run an ANOVA. 1) Is the improvement statistically significant? 2) How do you know? 2. The cycle time to complete a final step on an assembly line is normally distributed, with

While regression, time series data need stationary (useunit root test ), how about panel data? Is it necessary to use unit root test for panel data?

Delta Blue Airlines Delta Blue Airlines operates a commuter flight between Charlotte and Philadelphia. The plane holds 30 passengers in Economy and 6 passengers in First Class. The airline makes a $100 profit on each passenger in Economy and $200 per passenger in First Class on the flight. When Delta Blue takes 30 Economy reservations and 6 First

(1)The claim is that the proportion of peas with yellow pods is equal to 0.25 (or 25%). The sample statistics from one experiment include 590 peas with 126 of them having yellow pods. Find the value of the test statistic. (2) The claim is that the proportion of adults who smoked a cigarette in the past week is less than 0.35, and the sample

Scenario WidgeCorp became the market leader in snack foods after acquiring a rival company, Company W. Their management style and business decision-making differed. Employees at WidgeCorp collected relevant data and through statistical analysis used this information to draw conclusions and make appropriate recommendations. Company W tended to rely

1. A basketball team played 64 games. They won 24 more games than what they lost. How many games did they win? How many games did they lose? 2. The perimeter of a standard sized rectangular rug is 36 feet. The length is two feet longer than the width. What is the width? What is the length? 3. A lab technician mixed a 530ml solution of water and

Consider the ANOVA table that follows. Analysis of Variance Source Regression Residual Error Total DF 5 46 51 SS 3710.00 2647.38 6357.38 MS 742.00 57.55 F 12.89 a-1. Determine the standard error of estimate. (Round your answer to 2 decimal places.) Standard error of estimate a-2. About 95% of the residuals will be between what two values? (Round

\f

What is the effect of an outlier on the value of a correlation coefficient?

Nursing research- Using established guidelines, critique the data collection, analysis, and implications of a published quantitative study. Scholarly reference required

Suppose that X i ,.....,X n form a random sample from a distribution with pdf as follows: f X (x) = e x , x > The MLE (maximum likelihood estimation) for is X (1) . Use the MLE to construct a (1-)100% upper limit interval for .

Objective - Critically analyze program evaluation research Program Goal 1: Develop in our students the ability to form critical judgments that support democratic values. Program Competency: To analyze, synthesize, think critically, solve problems and make decisionsA charter school, serving mainly low-income, minority students, worked to improve

\f

Amath 301 Homework 4: Due Friday 8/12 at 4pm Summer 2016 Warning: This homework is long, do not wait until the last minute to start or you will not finish. Also, given its length, it is probably a good idea to clear all between exercises to free up memory Exercise 1: Chemical Differential Equations Consider the chemical reaction k1 [C] X Y. The

Topic of the study: I am going to evaluate the relationship between the level of schooling attended by various persons and their children. I have utilised both the quantitative and qualitative variable in my research method. Here the qualitative variable is level of schooling attended by various persons and the quantitative variable is their

Neumann University BUS 201 A Handout Assignment 3 Due date: 10:20 AM 12/7/15 Name:______________ Please read carefully: There are 5 questions on this assignment. In order to receive full credit your answer should include: Answer each question in the space that has been provided under the question. If you need additional space, you may use the back

\f

Healthy women aged 18 to 40 participated in a study of eating habits. Subjects were given bags of potato chips and bottled water and invited to snack freely. Interviews showed that some women were trying to restrain their diet out of concern about their weight. How much effect did these good intentions have on their eating habits? Here are the

PSYC 355 LAB PROJECT PHASE 2: RAW DATA SCORING INSTRUCTIONS How to Create SPSS Data File Open a new data file in SPSS. You will create a file containing 1 variable for each item (question) on the survey (for a total of 10). You will score each individual survey and enter the values into the appropriate column of the SPSS data file for later

Week 5 Homework 40 pts-Stacy True Student: Stacy True Date: 4/1/16 1. 4/1/16, 6:09 PM Instructor: JosephJoe D'Mello Course: Statistics for Decision Making (35) Assignment: Week 5 Homework 40 pts Find the area of the shaded region. The graph depicts the standard normal distribution with mean 0 and standard deviation 1. Click to view page 1 of the

In a clinical trial of a cholesteroldrug,301subjects were given aplacebo, and 18%of them developed headaches. For such randomly selected groups of 301subjects given aplacebo, identify the values ofn, p, and q that would be used for finding the mean and standard deviation for the number of subjects who develop headaches. The value of n is

1. From a population with standard deviation 25, a sample of size 100 is drawn. The mean of the sample is 235. Construct a 90% confidence interval for the true mean of the population. 2. Joey says that 90% of the observations are in this interval. Is Joey right? If not, what is the proper interpretation of this 90% confidence interval? 3. An

A recent survey showed that among 775 randomly selected subjects who completed 4 years of college, 162 smoke and 613 do not smoke. Determine a 95% confidence interval for the true proportion of the given population that smokes.95% CI: to

A radio jockey has 7 upcoming songs;3 are rock ,2 are reggae, 2 are country . He chooses the first song and randomly the second song. What is the probability that the first song is a rock song and the second a country song? Write as a fraction in simplest form

Please complete the Word document and the Excel sheet.

SIX RepeatedMeasures Download the following SPSS Data Set. Activity 6.sav Websites Reference Field text companion site. Provides access to SPSS data files. http://www.sagepub.com/field4e/main.ht m Document/Other Reference Instruction Download and use Activity 6sav file to complete Activity 6.sav.sav exercises Activity Description You will submit

You wonder whether the ratings for movies that are dramas differ, on average, from the ratings of movies that are comedies. You retrieve the ratings of 5 comedies and 5 dramas from the Internet Movie Database (IMDB). The R for dramas is 25 and for comedies it is 31. Using a p level of 0.05, what conclusion should you draw on the basis of these

\f

Use the following information to answer the next five exercises. There are five basic assumptions that must be fulfilled in order to perform a one-way ANOVA test. What are they? 1. Write one assumption. 2. Write another assumption. 3. Write a third assumption. 4. Write a fourth assumption. 5. Write the final assumption. 6. State the null

At wind speeds above 1000 centimeters per second (cm/sec), significant sand-moving events begin to occur. Wind speeds below 1000 cm/sec deposit sand and wind speeds above 1000 cm/sec move sand to new locations. The cyclic nature of wind and moving sand determines the shape and location of large dunes. At a test site, the prevailing direction of

1. If we increase the level of confidence holding all other data constant the range of the interval estimate decreases. True or False 2. The t-distribution is used to develop a confidence interval estimate of the population proportion when the population standard deviation is unknown. True or False 3. Which of the following would be an appropriate

Information regarding random samples of annual salaries (in thousands of dollars) of doctors in three different specialties is shown below. (20 mins) Pediatrics Radiology Pathology Sample size 12 10 11 Average salary 120 186 240 Sample variance 16 18 20 a. Compute the overall mean . Blank 1 b. State the null and alternative hypotheses to be

Question1: For each of the following, state the null (H 0 ) and the research or alternative (H 1 ) hypotheses Does mean age of onset of a certain acute disease for children differ from 11.5? Is the mean IQ of a sample of 60 children significantly above the normal IQ of 100? Is the mean hemoglobin level of a group of high-altitude workers different

1. The Time spent (in days) waiting for a kidney transplant for people ages 35-49 can be approximated by the normal distribution as shown in the figure to the right (a) What waiting time represents the 90th percentile? (b) What waiting time represents the first quartile? Page 1 of the Standard Normal Table Page 2 of the Standard Normal Table 2.

\f

\f

A team member has been saying since day one that there is a correlation between temperature and the thickness. Should the team have listened? Construct a scatter diagram and calculate the correlation coefficient to see if she is correct. Instructions for you: Construct a scatter diagram to see if she is correct. And, if she is, we may have found a

The mode will always consist of the following? The number of cases in the category The name of the category or the number code applied for that name Either A or B can be used None of the above

MATH 115 QUIZ 3 NAME: _______________________________ April, 2016 Instructor: S. Sands I have completed this assignment myself, working independently and not consulting anyone except the instructor. INSTRUCTIONS The quiz is worth 100 points. There are 11 problems. This quiz is open book and open notes. This means that you may refer to your

\f

given that x has a poisson distribution with u=2 what is the probability that that x=3

Let be Sa square of side length 1. Two points are chosen independently at random on the sides of S. The probability that the straight-line distance between the points is at least (1/2) is(a-2/c), where a,b,c and are positive integers with gcd(a,b,c)=1. What is a+b+c?

The weight of an organ in adult males has a bell-shaped distribution with a mean of 330 grams and a standard deviation of 20 grams. Use the empirical rule to determine the following. (a) About 95% of organs will be between what weights? (b) What percentage of organs weighs between 310 grams and 350 grams? (c) What percentage of organs weighs less

\f

Find themean, variance, and standard deviation of the binomial distribution with the given values of n and p.n equals 50n=50,p equals 0.5p=0.5 round to the nearest tenth

According to government data, the probability than an adult was never married is19%. You randomly select49adults and ask if he or she was ever married. Decide whether you can use the normal distribution to approximate the binomial distribution, If so, find the mean and standard deviation, If not, explain why

Mollys Candle Shop has several retail stores in the coastal areas of North and South Carolina. Many of Mollys customers ask her to ship their purchases. The following chart shows the number of packages shipped per day for the last 100 days. Frequency Number of Packages 10 0 5 10 15 20 25 30 35 20 30 13 28 23 18 10 5 3 On how many days were there

6.31 The mean height of a group of 500 nonsmoking college students is 74 inches and the standard deviation is 5 inches. What is the probability that a random sample of 25 students from this group, the average height will be between 73 and 75 inches?

Showing 600 - 700 of 1499
  • 7 / 15