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Mathematics Questions and Answers August 02, 2022

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question 3 & 5 difficult since 2010... & given the function \f\f
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1.An urn contains 30 balls: 11 red, 3 white, 7 green and 9 blue. What is the probability of choosing a white ball? 2.Three people of both sexes (women and men) are selected at random to belong to a committee. What is the probability that only one of the three people is a man? 3. Evaluate 7! 4.Evaluate 10 P 6 5. Evaluate 8 C 5

I need help solving this math problem Use the following tree diagram for questions 6 & 7. Boris the rat is trying to find food in the maze shown below. Boris is equally likely to take any path when coming to an intersection. B 6 What is the probability that he ends up in room B? W Type your answer in the rectangle, and submit your work in the
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In a random sample of seven aerospace engineers, the mean monthly income was $6824 and the standard deviation was $340. a)Assume the monthly incomes are normally distributed and construct a 95% confidence interval for the population mean monthly income for aerospace engineers. b) Calculate the two standard deviation interval and discuss the

Players Average points per game 2015/2016 x Deviation from the Mean (x) Square of the Deviation (x) Anthony Brown 4.0 Brandon Bass 7.2 D'Angelo Russell 13.2 Jordan Clarkson 15.5 Julius Randle 11.3 Kobe Bryant 17.6 Larry Nance Jr. 5.5 Louis Williams 15.3 Marcelo Huertas 4.5 Metta World Peace 5.0 Nick Young 7.3 Robert Sacre 3.5 Roy Hibbert 5.9 Ryan

N - e What are the big corporations doing with their wealth? One way to answer this question is to examine profits as percentage of assets. A random sample of 50 Fortune 500 companies gave the following information. 12.6-16.5 | 16.6-20.5 | 20.6-24.5 | 24.6-28.5 Profit as percentage of assets | 8.6-12.5 Number of companies 11 16 Estimate the sample
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A young sumo wrestler decided to go on a special high-protein diet to gain weight rapidly and at a constant rate. After 8 months, he weighed 138 kilograms. He started at 90 kilograms. Let y represent the sumo wrestler's weight (in kilograms) after a months. Complete the equation for the relationship between the weight and number of months

The following information is based on age x1 and the selling price x2 measured in thousands of dollars, for n = 10 used cars. (5 points each part) a. The following is a scatter plot with a box plot for each of the variables. Give a description of what you see in these plots. \f
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[Show Work]Travelocity would like to test if the average roundtrip airfare between New York and London is less than $1,400. A random sample of 30 flights between New York and London was selected and the airfare was recorded. Assume that the standard deviation for the population of airfares between these two cities is $230 and the true population

say something substantive about "Within my daily life as a university student and mother, the probability of sitting down and doing my studies is within short windows of time. With that, scheduling study sessions throughout the days during each week is a must. Out of 7 days of the week, 5 will have study blocks, leaving 2 days open free. To break

6. (2.5 pts) A system has two eigenvectors, Q1 and $2, and an angular momentum operator Lz. What are the eigenvalues for each eigenvector and the operator Lz? Show your work. O 2 L, = O 2 a ( 9 ) = ( ae + bf 1 2 5 17 Hint: e.g. = ec + df 3 4 39
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Arctic sea ice has retreated by 25% and thinned by 40% in the last 50 yrs (show all calculations): a) What has been the percentage loss in its volume?

Fry has the following information: City Probability of Precipitation Temperature (Celcius) Hamilton 60% -3 Toronto 27% 2 London 77% -3 Waterloo 62% -1 1.Predict the profit Fry could earn with each city-and price combination, 2.where should Fry go and how much should she charge? AutoSave (@ Off) FOOD-TRUCK-RAW-DATA_Home_work_HS.xisx Search Sign in
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A university president would like to know what additional student service options would improve the school's performance. All students from seven randomly selected departments of a particular college are interviewed as they leave the university. In this scenario, determine the sampling unit. a. The university where the college is based b. The

Park officials make predictions of times to the next eruption of a particular? geyser, and collect data for the errors? (minutes) in those predictions. The display from technology available below results from using the prediction errors to test the claim that the mean prediction error is equal to zero. Comment on the accuracy of the predictions.
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The fourth degree identity matrix has: a. rank not equal to 4 b. None of the above c. trace equal to 4 d. determinant not equal to 1

NO.7Your customer has upgraded their on premise 11.2 database to 12.2. During this migration the database was migrated to a pluggable database and is now in production.How should the customer unplug their database to migrate to Autonomous Database (ADB)?

Linear regression analysis Consider the auto dataset, auto.csv (you can download it on the Internet) I hope to build a multiple linear regression for predicting mpg as y variable. ( R or SAS, or anything else) 1) Fit a multiple linear regression model using all variables (displacement, horsepower, weight, acceleration, origin as x variables)

A researcher is interested in predicting the number of homes sold from years in business as a real estate agent and their level of education. Use the realestate.csv data to respond to the following: a. What is the dependent variable and the independent variable(s)? (1 mark) b. In R explore the relationship between these variables? Describe what

We want you to determine the baseline sigma with the Motorola 1.5 sigma shift. Note: You will need to refer to the tab entitled "The Project" for this deliverable. Instructions for you: Calculate the PPM/DPMO for this process and determine the baseline sigma with the Motorola shift. Data: 6.3% of people left without treatment TARGET ASSIGNMENT

(CO 6) A student wants to determine if a higher quality diet will improve their grade point average. Which variable would be the explanatory variable? The higher quality diet The number of classes taken The student Their GPA

1 Studying the patterns of flaws in multiple research studies on the same subject can help support or reject the premise of the research. When studies with different flaws still come up with similar answers, we have High error rate Rejection of the null hypothesis None of the above Converging evidence

A company purchases large shipments of widgets and uses this acceptance-sampling plan: randomly selects and tests 12 widgets, then accepts the whole batch if there is at most two widgets that does not work. If the company purchases 3000 such widgets, what are the expected number of defective widgets?

Need the following question answered, please show all work. Thank you in advance :) Calculate the rent of a decreasing annuity at 8% interest compounded quarterly with payments made every quarter-year for 12 years and present value $200,000.

Mathematical models are used as tools to describe reality. These models are supposed to characterize the important features of the analyzed phenomena and provide insight. The normal distribution is an example of a random variable that is widely used by researchers to model real data. Researchers often model real observations using the normal

You were interested in how long the average psychology major at your college studies per night, so you asked 10 psychology majors to tell you the amount of time they study? what is the appropriate distribution for finding a confidence interval?They told you the following times: 2, 1.5, 3, 2, 3.5, 1, 0.5, 3, 2, 4. What is the appropriate

Let denote the average number of pups for a randomly chosen litter. A biologist working for the International Wolf Center selects at random 8 litters for the purpose of his research. What is the probability that the number of litters with at most 3 pups (among the 8 litters) does not deviate by more than 2 from ? Hint: ComputeP(|Y|2) where Y is
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Which of the 4 types of Lake Effect snow patterns are most common in Michigan? Group of answer choices Broad areas of parallel bands Shoreline bands with line of convection parallel to shore Midlake bands with convergence centered over the lake Cyclonic disturbances moving across the lakes

Consider the following estimator for e 2 ( 1 n 2 ) n X Is this estimator biased? What is the variance of this estimator? Consider the following estimator for e'\" (13)\" b Is this estimator biased? .. What is the variance of this estimator
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In my daily everyday life I probably only use basic math for tips when my friend and I go out for lunch. besides this I often have to do calculations during tax season, to figure out the charges I need added for the preparer versus whats being charged for the program and bank product. With fractions I would probably say that when tipping is when I

An investment analyst believes that she has found an indicator of soon-to-occur uptums in the stock market (something most of us desperately want to see at this time). She asserts that \"only rarely does the market fall with such velocity that the spread between the weekly NYSE index and the 10-week moving average of that same index stretches to
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C) - -5 -3 -2 2 4 5 6 The slope of the line is: D) - -5 -4 -3 -2 1 2 3 4 5 6 The slope of the line is: E) The slope of the line is: -5 -4 -3 -2 -1 123 4 5Find two integer points that these lines past through. (By integer points, we mean points where both coordinates are integers). Then use these points to graph the lines. A) 12x - 3y = - 12 10 8
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QUESTION 1 Weekly closing prices (in RM) for Telstra for Sept 2015 - October 2015 is as follows: Week Share Price 1 3.47 2 3.58 3 3.41 4 3.39 5 3.25 6 3.40 7 3.35 8 3.51 9 3.41 10 3.41 Solve: 1. Use a 3 week moving average (SMA) to forecast the price for week 11. 2. Use a 3 week weighted moving average (WMA) to forecast the price for week 11. Use

For the data set shown below, complete parts (a) through (d) below. X34578 Y 4761315 (a) Find the estimates of Bo and B1. Bo=bo= _____ (Round to three decimal places as needed.) B1=b1= ______(Round to four decimal places as needed.) (b) Compute the standard error the point estimate for se= ____ (c) Assuming the residuals are normally distributed,

You are unsure if a coin is balanced or not, so you flip it many times. Giving the estimate closest to your solution, about how many flips should you perform to make sure that you are within 1% of the true proportion, based on a 95% confidence interval

Given the returns and probabilities for the three possible states listed here, calculate the covariance between the returns of Stock A and Stock B. For convenience, assume that the expected returns of Stock A and Stock B are 0.13and0.15, respectively. (Round your answer to 4 decimal places. For example .1244) Probability Return(A) Return(B) Good

Ho: p = 0 Ha: p > 0 Data were collected from a random sample of 46 cases. In the sample, Pearson's r was +0.126. A randomization test was conducted using the hypotheses above. Given a p value of 0.198, the researchers did not reject the null hypothesis. If in reality p=+0.110, was a Type I or Type II error committed

Did habitat type influence pellet detection, based on our AIC model selection test? Did our analysis adequately compensate for this

#1 [Chapter 1] Due: Friday. February 2, 2024 Concepts/Descriptions (10 points total) 1. FCC 2. Donor 3. Degenerate semiconductor 4. Direct semiconductor Calculations [15 Points each] 1. [Sze 1 - 1] (a) What is the distance between nearest neighbors in silicon? (b) Find the number of atoms per square centimeter in silicon in the (100), (110), and

Determine theupper-tail critical value t/2 in each of the following circumstances. a. 1-alpha=0.90, n=63 b. 1-alpha=0.95, n=63 c. 1-alpha=0.90, n=36 d. 1-alpha=0.90, n=20 e. 1-alpha=0.99, n=28

(e) Does it make sense to interpret the intercept of the least squares regression line? If so, give an interpretation. If not, explain why it is not appropriate for this data set. (Hint: Think about the range of the x values in the data set.) It is not appropriate to interpret the intercept since 0 is far outside the range of the bend angles in

Question 1 - Investment Outcomes Alan and his financial advisor Bob discuss risk measurement for investment options. Bob presents an investment with the possible outcomes and their associated probabilities given in the table below. He indicates that these probabilities are calculated based on past experience, industry rations and trends, and
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a) Findthe probability of z .02. b) Find the probability of z .045. c) Findthe probability of z .20. d) X is normally distributed with mean 100 and standard deviation 20. What is the probability that X is greater than 145? e) X is normally distributed with mean 250 and standard deviation 40. What value of X does only the top 15% exceed? f) X is

----------------------------- Approximately 10% of people are lefthanded. If two people are selected at random, what is the probability of the following events? 51. Both are right-handed. b. Both are lefthanded. c. One is right-handed and the other is lefthanded. d. At least one is righthanded
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Consider a discrete random variableX with the probability function as specified below: X -4 -2 -1 3 4 f(X) 0.10 .30 .20 .20 .2 For this random variableX , compute the following: Consider a discrete random variable X with the probability function as specified below: X -4 -2 -1 3 4 f (X) 0.1 0.3 0.2 0.2 0.2 For this random variable X, compute the
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Let's say you are testing two flu drugs A and B . Drug A works on 41 people out of a sample of 195. Drug B works on 351 people in a sample of 605 . Are the two drugs comparable? Use a 5% alpha level.

function [x, conv, res, i] = ... newton_raphson_func(f, df, initial_guess, conv_tol, res_tol, max_iter

If x is a binomial random variable with 1 = and p=.2 , then the P(x = 2) = a) .608 b) .270 c) .392 d) .205

carry all decimals until you reach answer, then round to four decimals. Daily-Problem-25 Q Search Sheet Home Insert Page Layout Formulas Data Review View 9 . A- A = = Number Insert Arial Wrap Text * Delete AP. Paste B h . A . Merge & Center -00 Conditional Format Cell Sort & Formatting as Table Styles Format Filter G25 x v fx| A B C D E G H K L M
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Write the equation of each asymptote for each function and state whether it is a vertical or horizontal asymptote. x+5 x2-4 x24x+3 x241 a. f(x)=(x 3)/x? b.f(x)= c.f(x) =
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Let x be a random variable that represents the weights in kilograms (kg) of healthy adult female deer (does) in December in a national park. Then x has a distribution that is approximately normal with mean ? =58.0kgand standard deviation ? =6.4kg.Suppose a doe that weighs less than49kgis considered undernourished. This is a Central Limit Theorem
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Exercise 7.8.4. [S][Section 7.2] [Goal 7.1] [Goal 7.7] Direct current. In an article from The New York Times on November 17, 2011, headlined "From Edison's Trunk, Direct Current Gets Another Look" you can read that In a data center redesigned to use more direct current, monthly utility bills can be cut by 10 to 20 percent, according to Trent
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2. Find the linear polynomial (y = mx + b) that 1s the best fit to the following data: (Show every step involved)8 points
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Apply two sample hypothesis test using continuous data on following example The past decade has seen significant reductions in the number of infants born with neural tube defects (NTDs) and expansion of screening of newborns for metabolic and other heritable disorders. Mandatory folic acid fortification of cereal grain products labeled as enriched

Suppose that you were trying to determine if more than half of Americans get information about science and technology from the Internet.In 2016, the General Social Survey asked its participants:Where do you get most of your information about science and technology: newspapers, magazines, the Internet, books or other printed materials, TV, radio,

Tax Impact on a Small Business Owner from 2001 to 2011 (a) Calculate the tax due in 2001 for a small business owner with a net taxable income of $75,000. What is the effective tax rate? (b) Suppose the business owner's income adjusts each year to match inflation. Use an inflation calculator to find their net tavable income in 2011. (c) Utilize the
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centrifugal force exerted on rotating turbine blades varies directly as the sq of vel. If cent force 1.21x10(6th) N = 550 m/sec, find instantaneous rate of change of cent force as vel increases to 840 m/sec.

10. (6 points) In the Denver 45% of houses have a high radon level. If 20 houses are randomly selected, a. what is the probability that 6 will have a high radon level? b. What is the probability that at most 6 will have a high radon level? c. If 6 of the 20 houses were found to have a high radon level, would this be unusual? Why or why not?

Problem 2. (1 point) Find the linear approximation of f(a ) = In a at a = 1 and use it to estimate In (1.28). L(ac) = In 1.28 ~ Note: You can earn partial credit on this
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The distance between emergency exits in RABT tunnels is 300 meters. If your car breaks down in a RABT tunnel, what is the probability that you will have to walk less than 60 meters to reach an emergency exit? Sketch the distribution graph for the distance to an emergency exit.

3. Duncan works as a waiter, He records the amount of tips he receives each day he works in a month, rounded to the nearest dollar. 25 30 35 45 50 40 34 45 20 30 40 50 35 50 20 15 30 50 50 &0 Group the data into reasonable intervals. Determine the mean(p) and standard deviation of the grouped data, to the nearest dollar. The first interval is
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Use Lagrange multipliers to find the given extremum. Assume that x and y are positive. Minimize f ( x , y ) = x 2 y 2 Constraint: x 8 y +189= 0 Minimum of f ( x , y ) = at ( x , y ) = Maximum of f(x, y)= at (x, y) =

The lowest entry and the highest entry in a data set are 19 and 76, respectively. If 7 classes are to be used in its frequency distribution,

how do i find producer surplus at market equilibrium given the information below? p is in dollars and x is the number of units. Find the producer's surplus at market equilibrium for a product if its demand function is P=144-x^2 and its supply function is P= x^2+10x+116

The scientific process is predetermined, following the linear scientific method. Group of answer choices True - the linear scientific method is the most commonly applied approach to scientific research True - following predetermined steps reduces errors False - the real scientific method has multiple decision points

A survey of 528 adults aged 18-24 year olds was conducted in which they were asked what they did last Friday night.It found: 157 watched TV 199 ate pizza 33 watched TV and ate pizza, but did not hang out with friends 25 watched TV and hung out with friends, but did not eat pizza 25 hung out with friends and ate pizza, but did not watch TV 25

Please answer using Excel formulas: If T is a random variable with t-distribution what isa.P(T > 2.0) if degrees of freedom is 5?b.P(T < 1.5) if degrees of freedom is 8?Hint: Since you know the t value and want to find probability, use "T.DIST" Excel function here. Click on Help on this function pop up window, if you need extra help understanding

No idea how to solve this. Please help. Please review by TN 5 (part 1) Video 2 if you are having trouble with this problem. My examples 2, 3, and 5 in that video go through exactly how to do a problem like this. Consider f(a) = (x+2)(1-2x) - x+2 + 1-2x . If you are curious how I got the second expression from the first, it was partial fractions,
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Horner et al. (2012) provide a great guideline for narrowing consideration of magnitude of change between phases, particularly when data points initially are unstable and widely divergent. They recommend comparing the last ______ to data points from Phase 1 to the first - to - data points in Phase 2

A consultant believes that bids on a project contract X are uniformly distributed from $10000 to $20000.Theprobability that the bids range from $10000 to $12000 is what percent?

What would happen if you made treatment decisions without data

The Department of Finance provided the following information regarding the new retail jobs created in a sample of 5 cities in 2009. The average number of new jobs created per city estimated to be 3320. We want to determine whether there has been a significant decrease in the average number of jobs created. State the null and the alternative

A college professor claims that the entering class this year appears to be smarter than entering classes from previous years. He tests a random sample of 16 of this year's entering students and finds that their mean IQ score is 116, with a standard deviation of 15. The college records indicate that the mean IQ score for entering students from

first question . please help me 1. A researcher wanted to get the percentage of college students that major in Business. The researcher got information from 5 colleges with a total of 11 thousand students and found that 1.5 thousand of them majored in Business. a. What is the population? b. What is the sample? c. What is the parameter? d. What is
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4. (10 points) Consider the follow probabilities for events A and B. P[A|B] =025 P[A|B']=0.5 P[B] =0.35 Calculate P[A] [HINT: YOU NEED TO USE BAYES' THEOREM TO CALCULATE THIS PROBABILITY, AND DON'T FORGET ABOUT LAW OF TOTAL PROBABILITY]
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How do i do this? Assume that a population grows logistically and is being harvested according to the DTDS "t+1 = 2.5x4 (1 - at) - hat where h > 0 denotes the intensity of harvesting. At a steady state p, the yield is Y (h) = hp. If we harvest very little, then the yield is small. If we harvest a lot, then the steady state will be small and so
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The mean weight of a newborn baby in North America is 120 ounces (oz). We want to test the hypothesis that mothers with low socioeconomic status have babies whose weight at birth is lower than 120 oz. Let? be the mean weight of a newborn baby whose mother has a low socioeconomic status. Set-up a test of hypotheses and explain when type I error or
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During the analysis phase of the scientific method, Multiple select question. charts and graphs are created to represent the data. the raw data is summarized. the data's significance is examined to determine how much variation is attributed to chance. there is discussion of the results. measurements like mean, range, and variation may be calculated

How many distinguishable permutations of letters in word CONSCIOUSNESS are there? Please show work.

1. Find an equation for the plane tangent to 2x^2+3y^2-z^2=4 at (1,1,-1).

A national survey of U.S. consumers conducted by the Wall Street Journal asked the question: "In general, how would you rate the service that Americanbusinessesprovide?"The distributionof responsesto this questionwas as follows: Excellent8% Pretty good47% Only fair34% Poor11% Suppose a store manager wants to find out whether the resultsof this

is the formula for moving average the same for every cell

A family doctor books 10-minutes Zoom appointments for each patient starting with 9:00 a.m. each morning. Some appointments are longer, some are shorter than 10 minutes. The duration of a patient's appointment is a random variable with a normal distribution with a mean of 9.5 minutes and a standard deviation of 2 minutes. What is the probability

According to Functionalism, a state of brain activity cannot perform the same function as a state of a computer's circuits. Group of answer choices True False

Octnano Wolverine Airlines needs to assign aircraft to the daily flights scheduled below in Table 1. The aircraft in Table 2 are available to be assigned. Table 3 shows the potential profit for the various flight/aircraft combinations
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You wish to test the following claim (Ha) at a significance level of=0.002 Ho:=64.2 Ha: <64.2 You believe the population is normally distributed, but you do not know the standard deviation. You obtain a sample of sizen=11with meanM=57.5and a standard deviation ofSD=15.9 What is the test statistic for this sample? (Report answer accurate to three

Please help me figure out. I know this can be uploaded to statcrunch but I am not sure what test to run. Please give specifics on how to enter data into statcrunch 1 A group of students estimated the length of one minute without reference to a watch or clock, and the times (seconds) are listed below. Use a 0.10 significance level to test the claim
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2. En un estudio sobre la cotinina en saliva, se pidio a siete sujetos, todos los cuales se habian abstenido de fumar durante una semana, que fumaran un solo cigarrillo. Los niveles de cotinina a las 12 y 24 horas despues de fumar se proporcionan en la Tabla 2. a. Dibuje un diagrama de dispersion para mostrar una posible asociacion entre las

D Question 1 1 pts A simple random sample of 34 boys, age 7 - 9 from Santa Cruz County was interviewed by people from the County health inspector's office. Among the data that were collected, the boys weights were measured and recorded. A histogram for the weight data is displayed below. Frequency 30 50 60 70 80 90 100 110 Weight in Ibs Based on
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1.Discuss ethical implications surrounding human subject research studies.The major ethical issues in conducting research are informed consent, beneficence (do not harm), respect for anonymity and confidentiality and respect for privacy.

I need help writing my statistics in psych lab, and am confused if what i am writing is right or not need help ASAP

Which of the following is a valid probability value for a random variable? A.1.01 B.0.29 C.-.75 D.All of the above E. None of the above

adviser is testing out a new online learning module for a placement test. They wish to test the claim that on average the new online learning module increased placement scoresat a significance level of = 0.05. For the context of this problem, D = new - old where the first data set represents the new test scores and the second data set represents

Math 107 College Algebra Quiz 5 Name____________________ Instructions: Show all work to earn full credit on the following exercises. You MAY use any handouts, notes, or homework you have completed prior to the quiz, but must work alone. For these problems, consider the parabola 2 f ( x) 2( x 1) 10 written in vertex form. 1) [4pts] Using a drawing

An instructor has given a short quiz consisting of two parts. For a randomly selected student, let X = the number of points earned on the first part and Y = the number of points earned on the second part. Suppose that the joint pmf of X and Y is given in the accompanying table. a) If the score recorded in the grade book is the total number of
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With regard to exercise, America's children are Blank______. Multiple choice question. not getting enough getting too much spending too much time exercising and not enough on their studies not spending enough time in structured exercise that is proven to maintain healthy weight

How to perceive the mildest seasons throughout the year

La pliza de Manejo Global va dirigida : a. Un nmero de cargos identificados. b. Por sus caractersticas especiales es una pliza exclusiva del Sector Estatal. c. Un afianzado en particular. d. Sector Comercial y ante Entidades Estatales

Which of the following is an example of a sample statistic? a.) 25 random students are asked how much they spent on books b.) Standard deviation of tuition costs for all private universities c.) Average number of all high school graduates who will attend college d.) The proportion of the student population who live on campus

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