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Mathematics Questions and Answers February 28, 2023

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Use Bayes Theorem to solve this problem, A paper bag contains two red balls and one blue ball. A plastic bag contains three blue balls and one red ball. A coin is tossed. If it falls heads up, the paper bag is selected and a ball is drawn. If the coin falls tails up, the plastic bag is selected and a ball is drawn. If a red ball is selected, what

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Jennifer decided to have a barbecue. She invited John over and offered him a piece of wild boar. Unfortunately, the boar wasn't cooked all the way through, and john became worried that he may have contracted a disease which is known to be transmitted by exposure to raw boars. Having talked to an expert on infectious diseases, John believes that he

Please help with this question in the next 30 min! The mean and mode for a statistics test will be the same if the distribution is: a. skewed b. normal c. bimodal d. multimodal

MultipleRegression. Calculate a multiple regression that examines whether age, gender,and students extroversion predict if a student wants the lecturer to beextroverted. Ensure you handlemissing data as you decided above. State if you areusing one or two-tailed test and why. Include diagnostics Discussassumptions; are they met? Write the resultsin

This worksheet contains values required for MegaStat charts. Boxplot 12/5/2012 16:43.50 2 1559681 2 2093854 3 2093854 3 2359023 1 2359023 3 2359023 3 3039261 2 3039261 2 3565718 2 3039261 1 3039261 1 2093854 2 2093854 1 -742364.5 3 -742364.5 1 675744.9 3 675744.9 1 4457370 3 4457370 1 5875479 3 5875479 Dotplot 12/5/2012 16:44.17 1559681 1 1603596

Use a table of areas for the standard normal curve to find the required z-score. Find the z-score for having area 0.45 to its right under the standard normal curve, that is, find z0.45. 0.3264 -0.13 0.6736 0.13

ANSWER QUESTION BEFORE 9PM TONIGHT 1. Among uses of automated teller machines (ATMs),94%use ATMs to withdraw cash and 31%use them to check their account balance. Suppose that 97%use ATMs to either withdraw cash or check their account balance (or both). Given a woman who uses an ATM to check her account balance, what the probability that she also

Stats Quiz : 1. Bolts are produced by a certain process. The diameters of the bolts have mean 13cm and standard deviation 0.7cm. The bolts are packaged randomly into packets of 100 bolts. Which of the following is true about the mean diameter of a packet of 100 bolts? The mean diameters of the packets of 100 bolts have a mean of 1.3cm and a

(a) Write the claim mathematically and identify H 0 and H a . (b) Find the critical value(s) and identify the rejectionregion(s). (c) Find the standardized test statistic. (d) Decide whether to reject or fail to reject the null hypothesis. In a sample of 1000home buyers, you find that 499home buyers found their real estate agent through a friend.

The director of a company wants to know the mean salary of all the company's employees. The most effective way of determining this is to: A. Record the salaries of a simple random sample of employees. B. Record the salaries of a stratified random sample of employees. C. Record the salaries of a cluster sample of employees. D. Record the salaries

Unit 5 Homework Assignment (5.1, 5.2) WebAssign Unit 5 Homework Assignment (5.1, 5.2) (Homework) Current Score : - / 23 5/31/15, 11:51 AM Alberto Pena MAT230, section MAT230.90 MOD 5, Summer 1 2015 Instructor: James Segala Due : Saturday, June 20 2015 11:59 PM EDT 1. -/1 pointsBerrFinMath1 5.1.001. Find the number using the following Venn diagram.

You are employed as a statistician for a company that makes household products, which are sold by part-time salespersons who work during their spare time. The company has four salespersons employed in a small town. Let us denote these salespersons by A, B, C, and D. The sales records (in dollars) for the past 6 weeks for these four salespersons

Previous Page Next Page ; Hate: It is remmmended that you save your $fifliziafiy Questian 19 (Mandatory) (3 miami What is the risk: of parfarming the 9625th g'il'i'lmfi} 'x:i'

Regression is one of the concepts and tools in this course which is most commonly used in careers.Regression is often used with forecasting, which allows businesses to plan and prepare for expenses,hiring, etc. Read the following articles, then come back and share what was most surprising to you. Suggest one way you might use regression in your

1. tickets are drawn at random with replacement from a box of numbered tickets. the sum of 25 draws has expected value equal to 50, and the SE is 10. If possible, find the expected value and SE for the sum of 100 draws. Or do you need more information? 2. One hundred draws are going to be made at random with replacement from the box [0 2 3 4 6]

Microsoft Word - hw9.docxProblem 1. (7pts). The director of admissions at a large university advises parents of incoming students about the cost of textbooks during a typical semester. He selected a sample of 64 students and recorded their textbook expenses for the semester. He then computed the sample mean cost of $612 and a sample standard

Student Name:____________________________________ Week 2 Assignment - Kill- EZ example Please show your calculations. If there are in your work, the calculations can show me where the errors were made, and I can point you in the right direction. The easiest way to show your work would be to use an Excel spreadsheet. Submit it with your assignment.

A recent study evaluated how addicted teenagers become to nicotine once they start smoking. The response variable was the number of yes answers on a questionnaire called the Hooked on Nicotine Checklist (HONC). Of teenagers who had tried tobacco, the mean HONC score was 3.8(.4) for the 142 females and 2.4(.2) for the 174 males. Complete parts a

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In Project Portfolio Management at XYZ Pharma Case Study, how do get an answer for Part 4 Project Portfolio Decisions?

Research designs that lack both a pretest and a control group are usually termed: Select one: a. nonequivalent group designsb. true experimental designsc. quasi-experimental designsd. pre/nonexperimental designs

Find the equation of a line parallel to x = 7 and passing through the point (2, -5). please show work if applicable

1. Find the tangent vector r(t) at the point where t=3 given r(t)=(4cos(t))i+(3sin(t))j+(3t)k a) r(3)=3j+3k b) r(3)=3j+9k c) r(3)=4i3j+9k d) r(3)=4i3j+3k e) r(3)=3j+9k 2. Give the vector parameterization of the tangent line to r(t)=(e^3t)i+ (e^3t)j+(3ln(t))k at the point where t=1 a) R(u)=(e^3i+e^3j+k)+u(3e^3i3e^3j+3k) b)

Essex Prescott Assignment HW3 due 10/09/2015 at 11:59pm PDT STAT300-101 2015W1 Suppose that in fact the sibling on the high fat diet will gain more weight than their sibling in 74 1. (1 pt) In 2012 researchers at Deakin University in Australia ran a twelve-week dietary intervention study involving twins. Within each twin pair volunteering, one

4.4 1. y varies inversely with the cube of x . If y=375 when x=15, find y when x=12. Y=? 2. The temperature of a gas varies directly with its pressure. A temperature of 200 K produces a pressure of 50 pounds per square inch. a. Find the equation that relates pressure to temperature (Use T for temperature, and P for pressure). = ? 4.1 1. For the

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In a survey of a group of men, the heights in the20-29 age group were normallydistributed, with a mean of 68.8 inches and a standard deviation of 2.0 inches. A study participant is randomly selected. Complete parts (a) through (d) below. (a) Find the probability that a study participant has a height that is less than 67 inches. The probability

Lab 1A - Fall 2016 Limits Math 1730 Section: ____________ Name __________________________________________ Total Points: 53 1. (16 points) Given function ( ) below, fill in the blanks: ( ( ( ) ( ) ( ) ( ) ( ) ( ) ) ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) Now open Geogebra from the lab computer (if working from home, go to Geogebra.org). Right click on an

Re-write research question and double check hypothesis research question :- As we know that there is large differences in price and quality of the wine. Meant to be aged so hard to tell if wine will be good when it is on the market, so the challenge is to predict the price of the wine, with given set of variables. Describe why this question is

6.4 Yield strength of steel alloy. Industrial engineers at the University of Florida used regression modeling as a tool to reduce the time and cost associated with developing new metallic alloys (Modelling and Simulation in Materials Science and Engineering, Vol. 13, 2005). To illustrate, the engineers built a regression model for the tensile

The paired data below consist of the temperatures on randomly chosen days and the amount a certain kind of plant grew (in millimeters): Temp 62 76 50 51 71 46 51 44 79 Growth 36 39 50 13 33 33 17 6 16 Find the value of the linear correlation coefficient r.

The time it takes for a ferry to reach a summer resort from the mainland is Normally distributed with mean 2 hours and standard deviation 12 minutes. A) If 9 trips are randomly selected, what is the probability that between 4 and 7, inclusive, will take between 1 hour 45 minutes and 2 hours 15 minutes? B)What should be the advertised duration of

IfR=[1,3][1,1],use a Riemann sum withm= 4,n= 2 to estimate the value of (y 2 2x 2 )dA. R Take the sample points to be the upper left corners of the squares.

Mutual Fund Foreign Stock Intermediate-Term Bond Large-Cap Growth Large-Cap Value Small-Cap Growth Small-Cap Value Year 1 Year 2 Year 3 Year 4 10.060 13.120 13.470 45.420 17.640 3.250 7.510 -1.330 32.410 18.710 33.280 41.460 32.360 20.610 12.930 7.060 33.440 19.400 3.850 58.680 24.560 25.320 -6.700 5.430 Year 5 -21.930 7.360 -23.260 -5.370 -9.020

ues 1 In a multiple choice quiz, there are 6 questions. Each question has 5 possible answers. A student guesses at each question. Find the probability that the student gets 4 answers correct. Find the probability that the student passes (ie gets at least 50%) What is the student's expected number of correct answers? que 2 A company manufacturing

A couple just purchase a victorian home to remodel into a bed and breakfast. The following table shows their expected profit the first year, depending how many rooms they choose to remodel and demand. What decision would be best made if the following criterion were used? What is the value of the decision for each? a) Maximax b) Maximin c) Minimax

4 - Mathematical Biology (MATH/BIOL 4309) Spring 2016 D UE W EDNESDAY M ARCH 2 AT 10:00 AM . H AND IN AT LECTURE . Start early! Do not copy others' solutions! Please show all of the steps necessary to complete the written problem. Please name each MATLAB code le PROBLEMINITIALS.m (e.g. prob5ZPK.m). Email all MATLAB code to the TA Adrian Radillo

The relationship between two variables, x and y, is depicted graphically below. Based on the scatter plot, we can conclude the following about the value of the linear correlation coefficient r. a) r 1 b) r -1 c) r .8 d) r -.8 e) r Which of the probability distributions, depicted graphically below by probability histograms, could be best modeled by

7.15 Given a normal distribution with = 100 and = 10, if you select a sample of n= 25, what is the probability that X is a. less than 95? b. between 95 and 97.5? c. above 102.2? d. There is a 65% chance that X is above what value? 7.30 According to Gallups poll on consumer behavior, 36% of Americans say they will consider only cars manufactured by

1 Unit refining costs (per 100,000 barrels) Edmonton $1,500 Red Deer $1,200 Unit shipping costs (per 100,000 barrels) To Node index Grande Prairie Fort St. John Edmonton Red Deer From Grande Prairie 1 $2,000 $3,200 Fort St. John 2 $4,200 $4,900 Edmonton 3 $1,500 Red Deer 4 $1,500 Calgary 5 Lethbridge 6 Network formulation Origin Destination 1 3 1

All 6 members of a family work. Their hourly wages (in dollars) are 34, 36, 40, 39, 18, 31 Assuming that these wages constitute an entire population, find the standard deviation of the population. Round your answer to at least two decimal places.

1. Evaluate each function at the given values of the independent variable and simplify. g(x) = x2 + 2x + 3 1. g(-1) 2. g(x + 5) 3. g(-x) A. 1. 2 2. x2 + 12x + 38 3. x2 - 2x + 3 B. 1. 4 2. x2 + 6x + 38 3. x2 - 3x +5 C. 1. 7 2. x2 + 7x + 56 3. x2+ 4x + 7 D. 1. 5 2. x2 -12x + 38 3. x2+ 5x + 7 Question 2 of 20 5.0 Points Use the given conditions to

L is the loss at issue random variable for a fully-continuous whole life insurance of 1 issued to (x). You are given: a. The premium has been determined by the equivalence principle. b. E[v^T] = 0.166 and c. Var [v^T] = 0.0344 Calculate Var(L)

A plumber charges $80 for a service call plus $30 per hour. a. Find a linear function that represents the total daily charges C, in dollars, as a function of the time t, in hours, spent at a given location. b. If the total charge was $140, how many hours did he work?

1. If n=15 and p=0.4, then the standard deviation of the binomial distribution is 3.6. (Ch6)(Points : 8) True False Question 2.2. If the level of confidence and sample size remain the same, a confidence interval for a population proportion p will be narrower when p(1p) is larger than when it is smaller. (Ch9) (Points : 8) True False Question 3.3.

Find an article (journal or online) or develop a small case based on your working experience, which you can use as an example to demonstrate the application of a hypothesis test.

The following questions are to be answered with full solutions. Be sure to focus on proper mathematical form, including: One equal sign per line Equal signs in each question lined up vertically with each other No self-developed short form notation One step or idea per line(do not do steps in your head that are not written down; each line must

According to a recent survey, the average daily rate for a luxury hotel is $239.51. Assume the daily rate follows a normal probability distribution with a standard deviation of $21.93. Complete parts a through d below. a. What is the probability that a randomly selected luxury hotel's daily rate will be less than $ 257 question mark (Round to four

1- Suppose the prevalence rate of a particular trait among U.S. Adults is 50.2%. Consider taking a random sample of five U.S. Adults. Define the random variable of interest to be: X = the number of individuals with the particular trait in our sample of 5 individuals. Find P(X < 2). 0.815 0.154 0.496 0.185 2- Suppose the prevalence rate of a

A particular brand of women's jeans is available in seven different sizes, three different colors, and three different styles. How many different jeans does the store manager need to order to have one pair of each type of jean? Place your answer in the blank. Do not use any decimal places or commas. For example, 45 would be a legitimate entry.

Probablitiy QNT/351 Version 5 University of Phoenix Material PROBABILITY Maximum and Minimum Temperatures Search the Internet for U.S. climate data. Choose the city in which you live. Click on the tab that reads \"Daily.\" 1. Prepare a spreadsheet with three columns: Date, High Temperature, and Low Temperature. List the past 60 days for which data

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' :--> f ahgles'fin Hw'xisr'gfrthe gqumwflffi A hole of radius 12r is bored through the middle of a Cylinder of radius SR > 12r4atrlgh1': l' Prciic"Anoifigfrygfiggj , kflwwflwprwuwM'

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1. Which research paradigm is based on the pragmatic view of reality? a. quantitative research b. qualitative research c. mixed research d. none of the above 2. Which research paradigm is least concerned about generalizing its findings? a. quantitative research b. qualitative research c. mixed research d. none of the above 3. Which of the

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7.22 Using the z table in Appendix B, calculate the following percentages for a z score of 2 0.08: a. Above this z score b. Below this z score c. At least as extreme as this z score 7.32 If the cutoffs for a z test are -2.58 and 2.58, determine whether you would reject or fail to reject the null hypothesis in each of the following cases: a. z 5 2

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United Oil Company is attempting to develop a reasonably priced unleaded gasoline that will deliver higher gasoline mileages than can be achieved by its current unleaded gasolines. As part of its development process, United Oil wishes to study the effect of two independent variables x1, amount of gasoline additive RST (0, 1, or 2 units), and x2,

find the function f(x) satisfying the given conditions. f"(x)=7x, f'(0)=-5, f(0)=9 a. 7/6x^3 -5x+9 b. 7/3x^3 -5x^2 +9x c. 7/2x^2 -5x+9 d. 7/2x^3 -5x^2 +9x

Find the volume of the solid obtained by revolving the region bounded by the parabola y=4-x^2 and the x-axis aobut the line x=-3

A company uses a sample size equal to the square root of the lot size. If 1% or less of the items in the sample are defective, the lot is accepted; otherwise, it is rejected. Submitted lots vary in size from 1,000 to 5,000 units. Discuss the following issues: -If your AQL is indeed 1%, what is the type I error for the various lot sizes? -If you

Psych 60, Fall 2007 Rain (mm) Commute time (min) 3 20 0 10 1 25 9 30 15 60 12 25 Treat Rain as X variable Psych 60, Fall 2007 Compute the value of r for the correlation between amount of rain and commute time. Determine the least squares regression equation for the above data.

4. Resource-selection analysis compares the distributions of animals relative to the distribution of habitat. If the two dont agree, there is evidence of selection. A survey of 106 moose found that 24 were located in In burn interior, 22 in In burn edge, 20 in Out of burn edge, and 40 in Other habitat types. The corresponding proportion of the

A one-sided confidence interval for p can be written as p < + E or p > - E where the margin of error E is modified by replacing z /2 with z . If a teacher wants to report that the fail rate on a test is at most x with 90% confidence, construct the appropriate one-sided confidence interval. Assume that a simple random sample of 70 students results

Can you help me with some Operation Research questions

Find the indicated probabilities using the geometric distribution, the Poisson distribution, or the binomial distribution. Then determine if the events are unusual. If convenient, use the appropriate probability table or technology to find the probabilities. A newspaper finds that the mean number of typographical errors per page is six. Find the

Un espa intercepta un Mensaje enviado desde la base de militar de Una. El Mensaje ES 15 81 -9 39 -1 7 2 52 28 56 -12 18 32 100 -2 8 2 4 11 25 12 60 32 64 37 89-8 26 15 39 32 64 -9 21 4 14 El espa SABE Que El Mensaje encriptado ja Sido Una matriz cuadrada con 2'2, utilizando el alfabetoespaol Como en El problema anterior. :::: Adems Sospecha Que Al

Find the indicated probabilities using the geometric distribution, the Poisson distribution, or the binomial distribution. Then determine if the events are unusual. If convenient, use the appropriate probability table or technology to find the probabilities. A major hurricane is a hurricane with wind speeds of 111 miles per hour or greater. During

An American roulette wheel has 38 slots numbered 00, 0, and 1-36. Slots 0, 00 are green; Slots 1, 3, 5, 7, 9, 12, 14, 16, 18, 19, 21, 23, 25, 27, 30, 32, 34, 36 are red; Slots 2, 4, 6, 8, 10, 11, 13, 15, 17, 20, 22, 24, 26, 28, 29, 31, 33, 35 are black . The casino only wins if the ball falls in a green slot. If I bet on red 4 times, how many

Simple decision problems that do not involve dependent decisions over time (single stage) can be portrayed as a decision tree or a payoff table. Question 1 options: True False

A and B are complementary events where P(A) =0.3 and P(A|B)= 0.2 Calculate P(A and B)

6. You apply to 30 graduate programs 10 of which are in clinical psychology, 5 of which are in counseling psychology, and 5 of which are in social psychology. You get a message from home that you have a letter from one of the programs you applied to, but nothing is said about which one. Give the probabilities: a. A clinical psychology program b. A

Find an equation of the tangent line to the curve: y= [(x 3 + 2)(x+1) 1/2 ] / (x 4 + 2x) at the point of the curve where x = 1.

Need help with this assignment! I need someone who can complete it on the same pdf or convert it to word then complete it.

Temple University AS 2101 Actuarial Probability and Statistics II, Fall 2016 Assignment 3 Note: Assignment 3 is due on Friday, October 21, at the beginning of the class. You are encouraged to work on these problems in groups of no more than 3 or 4. Each student must hand in her/his own answer sheet. Throughout this assignment, fY |X (y|x) denotes

The soccer league in 1 community has 5 teams. You are required to predict, in order, the top 4 teams at the end of the season. Ignoring the possibility of ties, calculate the number of different predictions you could make. What is the probability of making the correct prediction by chance? There are 120 different predictions right? I dont know how

determine the x and y intercepts for the given equation 4x + 3y =12. Please show the steps too.

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If a hypothesis test leads to the rejection of the null hypothesis, a. a Type I error is always committed b. a Type II error is always committed c. a Type I error is never committed d. a Type II error is never committed e. None of the above answers is correct.

A sample offive salaries (in thousand $) is taken. Find the mean, variance, and standard deviation.Sample values $49, $62, $72, $38, $49

I am working on a project and I am having trouble verifying some data. I have a survery for 114 people. 85 answered yes and 29 answered no. I think my mean is 1.34 for yes and 3.93 for no but I am looking for verification. I am also trying to figure out the variance and the standard deviation.

Suppose the age distribution of the Canadian population and the age distribution of a random sample of 531 residents in the Indian community of Red Lake are shown below. Age (years) Under 5 5 to 14 15 to 64 65 and older Percent of Canadian Population 8.9% 11.9% 67.8% 11.4% Observed Number in Red Lake Village 49 41 389 52 Use to test the claim that

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Assumethat the ratings of a TV commercial has mean = 2 and variance = 4. Find i) P(X > 2) and ii) the score such that P(X>score)=.25 (75thpercentile) if: A.X is normally distributed. B.X has a gamma distribution (first find the values of the paremeters). C.X=a+Bbwhere B has a Beta distribution with==2 (first find the values of a and b).

7. A rental agreement requires the payment of $900 at the beginning of each month. What single payment at the beginning of the rental year should the landlord accept instead of twelve monthly payments if money is worth 6% compounded monthly? Interim calculations should be to 3 decimal places; final answer to the nearest cent. Total: 5 marks 8.

a boot strap distribution will be centered at the value of the original statistic. True or false?

stock A 15% return 8.3% standard deviation stock b 14% return 2.1% standard deviation. Answer the following questions: 1. As a financial advisor, are there factors other than return and risk that should be considered in making this decision? 2. Based on these factors what stock would you recommend to the client? 3. what reasons will you convey to

SPSS software can be used to do ____ . both descriptive and inferential statistics neither descriptive nor inferential statistics only inferential statistics only descriptive statistics

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Data X(weight) Data Y(Thickness) 62.2 62.2 62.1 62.0 62.0 62.1 62.4 62.2 62.4 62.2 62.2 62.0 62.0 62.3 62.2 62.1 62.4 62.2 62.4 62.0 2.60 2.60 2.59 2.61 2.60 2.60 2.61 2.61 2.61 2.61 2.60 2.59 2.61 2.60 2.60 2.59 2.61 2.60 2.60 2.59 1243.6 52.03 Objective: This activity has the purpose of helping student perform a Single Factor Design analysis and

Consider theliney=6x-1 Find the equation of the line that isparallelto this line and passes through the point 2,6 Find the equation of the line that isperpendicularto this line and passes through the point 2,6

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I'm doing my stats homework. I want to know if my answer is correct. Machine A or Machine B? At the JB (Just Bolts) factory there are two machines operating next to each other. Machine A makes 15 mm bolts and Machine B makes 14 mm bolts. Each machine produces bolts whose lengths vary approximately normally around their target mean length with a

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