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Mathematics Questions and Answers September 30, 2022

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Which normal distribution has a wider spread: Distribution A with a mean of one and a standard deviation of two, or Distribution B with a mean of two and a standard deviation of one? Explain your answer.

5) You and a friend live 4 miles apart. You hear the sound of thunder 18 seconds before your friend hears it. Assuming sound travels at 1100 feet per second, determine where the lightning occur?

my home is 1300 square feet, what will it coast for siding with concrete blocks 8in x 4in x16in

thinkers tend to see problems as obstacles. Question 16 options: Convergent High-task Divergent DeliberateLow levels of __________ are functional. Question 17 options: relationship process functional task

A 2015 Gallup poll of 1,627 adults found that only 22% felt fully engaged with their mortgage provider. What is the sample size? The margin of error for this data set is 2.5%. What is the 95% confidence interval using only 1 decimal? (Example answer:32.6 to 42.9) Using the previous problem about mortgage providers, complete the sentence below for

Simplify the given expression 10 divided by 2 + (9 - 4)^2

Assuming 210,000 MCF of natural gas used for the VT power plant, calculate the 2022 total fuel costs for on-campus electricity generation at the VT Power Plant. Assume that VT natural gas has a total delivered price of 7.32. Round your answer to the nearest $1,000 dollars

If the mean of a data set is32 and the median is36 , which of the following is most likely? Select the correct answer below: The data are skewed to the left. The data are skewed to the right. The data are symmetric.

6. Consider the vectors u = Us: 11 1).'V = (9, 2, 9),W = (1, 1, 3). Find k such that the given vectors are linearly dependent
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Question 7 D Question 7 8 pts Express the null hypothesis and the alternative hypothesis in symbolic form. Use the correct symbol (u, p, o) for the indicated parameter. A researcher claims that 62% of voters favor gun control. O Ho: p # 0.62 H1: p = 0.62 O Ho: p = 0.62 H1: p # 0.62 O Ho: P 2 0.62 H1: p
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Ar magazine reports that on average normal dogs sleep a minimum of 12 hours per day. A sample of 25 Coekadoodles slept only 11.5 hours per day with s = 4. At a 95% level of confidence, test the hypothesis that the Coekadoodles are normal
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Please provide details for answers a,b, and c 7. (5 points) An outdoor restaurant in a summer resort closes only on rainy days. From past records, it is found that from May through September, when it rains one day, the probability of rain for the next day is 6; when it does not rain one day and the probability of rain following day is . 1. a. Draw
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An investor has decided to form a portfolio by putting 50% of his money into McDonald's stock and 50% into Cisco Systems stock. The investor assumes that the expected returns will be 8% and 15%, respectively, and that the standard deviations will be 12% and 22%, respectively.Draw probability trees to develop a probability distribution.

Question 7 If a social psychology instructor tells a student that she is one of the best students she's ever had, and the student changes her major to psychology, she is exemplifying O classical conditioning O operant conditioning O subliminal conditioning O dual conditioning Previous Next Not saved Subm
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Which of the following statements is NOT true? Group of answer choices Antarctica is a continent covered by a single enormous glacier Fewer than 30 of the original 150 glaciers within Montana's Glacier National Park remain today Almost half of the Arctic ice pack by volume has disappeared since 1970 The glaciers atop Mt. Kilimanjaro have retreated

The one-tailed tests. In their book, Common Errors in Statistics (and How to Avoid Them), Good and Hardin (2003) wrote, "No one will know whether your [one-tailed] hypothesis was conceived before you started or only after you had examined the data" (p. 347). Why do the authors state this as a concern for one-tailed tests?

A large manufacturing plant has analyzed the amount of time required to produce an electrical part and determined that the times follow a normal distribution with mean time = 45 hours. The production manager has developed a new procedure for producing the part. He believes that the new procedure will decrease the population mean amount of time

A researcher wishes to conduct a study of the color preferences of new car buyers. Suppose that30% of this population prefers the color green. If15 15buyers are randomly selected, what is the probability that between7and9 (both inclusive) buyers would prefer green? Round your answer to four decimal places.

The mean number of visitors at a national park in one weekend is 52. Assume the variable follows a Poisson distribution. Find the probability that there will be 58 visitors in one weekend. That is, find P(X=58) Round to 4 decimal places.

Math 1316 Trigonomtric irche X HOC MyEagle X MCC HW Ch 2.5 X Do Homework - HW Ch 2.5 X on.com/Student/PlayerHomework.aspx?homeworkld=670187664&questionld=1&flushed=false&cld=77... A Cp Dalleine Digue Yonghue
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Another researcher also decides to conduct a study to observe the association between smoking cessation among long-term smokers and obesity since it has been previously well documented in the literature that smokers tend to gain weight when they stop smoking. The researcher notes that among the individuals who gain weight, many of them have

The average amount of a beverage in randomly selected 16-ounce beverage can is16.2ounces with a standard deviation of0.5ounces. If a random sample of forty-nine16-ounce beverage cans is selected, what is the probability that mean of this sample is less than16.3ounces of beverage (keep 4 decimal places?

From photo, please answer question 8:Calculate the 95% confidence intervals to determine if the SMR is statistically significant. What is the lower limit of the confidence interval? What is the upper limit of the confidence interval? The number observed number of deaths in De Baca County is or is not statistically significantly higher than the
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Do men score the same on average compared to women on their statistics finals? Final exam scores of thirteen randomly selected male statistics students and twelve randomly selected female statistics students are shown below. Male: 75885988608866846859838285 Female: 688680999175849966947795 Assume both follow a Normal distribution.What can be

Provide an appropriate response. The data below are ages and systolic blood pressures (measured in millimeters of mercury) of 9 randomly selected adults. Age, x | 38 | 41 | 45 | 48 | 51 | 53 | 57 | 61 | 65 | Pressure, y | 116 | 120 | 123 | 131 | 142 | 145 | 148 | 150 | 152 | a) Find the linear correlation coefficient. Round the answer to 3 decimal

After making payments of $917.10 for 6 years on your 30-year loan at 8.7%, you decide to sell your home. What is the loan payoff? (Round your answer to two decimal places.) EX Enter a number. i diay paar Read It Watch It Master It Submit
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Question 23 of 25 (1 point) I Question Attempt: 1 of1 The graph of a quadratic function with vertex (0, 2) is shown in the figure below. Find the range and the domain. Write your answers as inequalities, using x ory as appropriate. Or, you may instead click on "Empty set" or l'AII reals" as the answer. (a) range: D (b) domain: D 13 14 15 16 17 18
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Please help with this stats problem! Explore the effect of skewness and sample size on confidence intervals. Go to the website https://istats.shinyapps.io/ExploreCoverage/ and click on "Confidence interval for a Mean" in the tab at the top right of the screen. Make sure you're using the skewed distriubtion with skewness level 2, and the confidence
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9. A 12 foot pole casts a shadow of 16 feet. What is the distance between the end of the shadow and the top of the pole? 10. Harold rides his bike 33 km south and then 56 km west. How far is the shortest distance from his starting point
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Write as a single fraction b+4y/5b-9b-y/3b=2 simplify as much as possible

A questionnaire measures an index of risk-taking behavior in respondents. Scores are standardized so that 100 represents the population average. The questionnaire is applied to a sample of teenage boys and girls. The data for boys is {72, 73, 86, 95, 95, 95, 96, 97, 99, 125}. The data for girls is {89, 92, 93, 98, 105, 106, 110, 126, 127, 130}.

How can I find the probability for number 24 ... explain the steps please Shift End 3 Enter PgDn Ins Del 24) Find the probability that 3 randomly selected people all have the same birthday. Ignore leap years. Round to eight decimal places. 24) A) 0.00000002 B) 0.0082 (1) X ( 1 / 365 ) x (1 1365 ) C) 0.00000751 D) 0.3333 25) What is the probability
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A distribution of values is normal with a mean of 140 and a standard deviation of 7. Find the interval containing the middle-most 72% of scores: __________ Enter your answer using interval notation. Example: [2.1,5.6) Your numbers should be accurate to 1 decimal places. Please help with this question....

In the house, there were 201 engineers, of which 16 were female. There were 233 artists and no writers, but 1 male cashier. At the beach, there were 53 engineers and 45 artists. There were also 2 writers. Of the 26 total females at the beach, 9 are engineers and none were writers. A house member is selected at random, find the probability of each

A Company is trying to ship a product which weighs 150 pounds with a density of 15.7 pounds per cubic foot. Using the carriers rate schedule below, what is the shipping cost? $12 per cwt Up to 10 pounds per cubic foot $8 per cwt For 11 to 20 pounds per cubic foot $6 per cwt For 21 pounds per cubic foot and up A. $8 B. $10 C. $12 D. $18

how many strings can be formed by ordering the letters "SCHOOL" using some or all of the letters? explain in details

Farah got 63 out of 97 on Test 2 which was 7 marks more than she received on Test 1. What was Farah's rate of change

Solve the following system: -3x - y = -13 -4x + y = 6 What is the value of x? A.0 B.2 C.1 D.10

Plz answer as quickly as you can Part B: Inquiry (20 marks) 1. Use the diagrams given to determine the equation of the polynomial in factored form. (8 marl (a) 2 0.5 O 0.5 1.5 2 2.5 3 -1 -2 -3 (b) 0 00 A 2 -7 6 -5 -4 -3 -2 0 2 3 4 5 6 -2 -6 - 8 10
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The U.S. Census Bureau publishes data on factory orders for all manufacturing, durable goods, and nondurable goods industries. Shown below are factory orders in the United States over a 13- year period ($ billion). First, use the data to develop forecasts for years 6 through 13 using a 5-year moving average. Then, use the data to develop forecasts

How to get the width of the confidence interval Question 4 2 pts Suppose you have two independent set of samples corresponding to two Normal random variables X and Y. Here are few summaries from these samples Sample Sample standard Sample mean deviation size X 80.02 0.024 13 Y 79.98 0.031 8 You are also told that you can assume the two population
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The function y equals f open parentheses x close parentheses has a range of left parenthesis negative 3 comma 16 right square bracket. The maximum value of y equals square root of f open parentheses x close parentheses end root is

We are interested in the number of critical corona cases in a country. In a scenario where an initial number of 100 corona cases doubles every second day (like often observed before prevention measures have been put in place), it would take 37 days until more than 60% of South Africa's population has been infected. At this stage, assuming that

Find the area of the indicated region under the standard Normal curve -1.30

Measure the the precise amount of \text{Na}\text{OH} added at the endpoint of the titration. (Remember, the solution will be a persistent faint pink at the endpoint.)

Isoquants Multiple choice question. slope downward. are horizontal lines. are vertical lines. slope upward

Using the model, write equations to represent each point on the number line that shows the maximum distance the flag can be pulled in one direction before one team wins. What will x represent
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what is the significance of polygons having the properties of an area and perimeter. What is the purpose of this

Write the ratio 45 liters to 42 liters as a ratio of whole numbers using fractional notation. Write the fraction in simplest form

A large randomized, blinded, placebo-controlled trial of a SARS-CoV-2 vaccine is designed to test the hypotheses (RR = relative risk) Ho: RR = 1 Ha: RR < 1 There were 2 infections in the vaccine group versus 20 in the control group. The investigators rejected the null hypothesis and concluded the vaccine was effective (p < 0.025). -Assuming equal

Four students attempt to register online at the same time for an Introductory Statistics class that is full. Two are psychology majors and two are biology majors. They are put on a wait list. Prior to the start of the semester, two enrolled students drop the course, so the professor randomly selects two of the four wait list students and gives

Find an expression for the ratio of the core exit velocity with and without the aft-burning boost

Disprove x R, y R, x^2 y + 100 and x R, y R, x^2 > y^2

Consider the Wyndor Glass Company Problem discuss in class. Suppose the estimate of unit profit for the two new products ow have been revised to $600 for the doors and $300 for the windows. Formulate this model algebraically. Use the graphical method to solve this revised model.

A particular roulette wheel has the numbers 1 through to 36, as well as 0 and 00. If you bet R10 that an odd number comes up, your payout will be R20 or R0, according to whether or not that event occurs. If X denotes your net return, the expected value of X (to the nearest cent) is:

When a property subject to a mortgage is transferred: Question 4 options: a) the mortgage is separated from the land and the debt is canceled. b) the mortgage is separated from the land and becomes a personal debt of the grantor, but only if the property is sold to a bona fide purchaser. c) the mortgage remains attached to the land. d) either b or

Find the horizontal asymptotes, if any, of the rational functions. 12 x 2 a. F(x)= 3 x +1 12 x2 b. G(x)= 3 x 2 +1 12 x c. H(x)= 3 x +1

1.You gather a sample of n=64 to estimate the population mean.The average of your sample is 85 and the standard deviation is 8.Construct a 95% confidence interval for the population mean. For questions 2 and 3 below, consider the following statement regarding a cereal manufacturer: Managers must ensure that the mean weight of filled boxes of

A company determines that the life span of one of its car engines is normally distributed with a mean of 150 000 km and a standard deviation of 10 000 km. For how many kilometres should the company warranty the car engine so that the company will only have to replace fewer than 2.5% of the engines?

If you draw a single card from a standard 52 card deck. Find the following: a. the probability you draw a face card (write your answer as an unsimplified fraction) b. the odds you draw a face card (write your answer as a ratio _____:_____) c. the probability you draw a king (write your answer as an unsimplified fraction) d. the odds you draw a

Mrs. Cunningham just finished giving her Algebra II final exams at Mapletown High School. The average grade for the 54 exams she has corrected so far is 75.55 with a standard deviation of 19.05 . What percent of students overall would you expect to score at least 78 on her exam, based on this sample finding? SHOW ALL WORK - and make sure you use

In what follows use any of the following tests/procedures:Regression, multiple regression, confidence intervals, one sided T-test or two sided T-test. All the procedures should be done with 5% P-value or 95% confidence interval. Some answers are approximated, choose the most appropriate answer. OpenBrainsdata. SETUP:It is believed that female

Select all the statements that are true about variation as a musical element. Multiple select question. All theme variations include some features of the original musical idea. In variation, one melodic idea is presented, then immediately repeated to complete the piece. While melody is viewed as moving horizontally, variation is viewed as moving

In a proportional relationship, x times _____ always equals y a. An origin b. A rational c. A constant d. A fraction

Show that the best values for the parameters and are = l 1 and = Z/(l 1)

: Using the data you collected for the Week 5 Lab (heights of 10 different people that you work with), discuss your method of collection for the values that you are using in your study. What are some faults with this type of data collection? What other type of data collection could you have used, and how might this have affected your study?

The following chart represents the cost of producing varying amounts of cheesesteaks in an hour. Quantity of Labor (Q) 10 15 20 25 30 Workers (L) 1.25 2.4 3.3 5 6.7 Wage Rate per hour $ 7.50 $ 7.50 $ 7.50 $ 7.50 $ 7.50 Calculate the cost of producing 15 cheesesteaks. Round your answer to the nearest hundredth

Pregunta 11 pts La produccin esbelta se refiere a la importancia de eliminar la mayor cantidad posible de desperdicios. Grupo de opciones de respuesta Falso Verdadero Pregunta de la marca: Pregunta 2 Pregunta 21 pts Los movimientos innecesarios, son pasos de produccin que no hacen falta y el exceso de inventarios en la cadena son objetivos para

What is one question about algebraic expressions or order of operations

Find a linear equation that passes through the points (1,5) and (6,0). Write in the correct format: y = mx + b There is a word count below the text area. Find a linear equation that passes through the points (1,5) and (6,0). Write in the correct format: y = mx + b

In a recent study, 1309 women were randomly selected women and it was determined that 285 of them owned a pet. In a similar study of 1225 randomly selected men, 310 of them owned a pet. Do these finding confirm a higher pet ownership rate (i.e. proportion) among men? a) Define parameter(s) and appropriate hypotheses. b) Are the assumptions and

Find the indicated area under the standard normal curve. To the left of z = 2.32 and to the right of z = 2.32 The total area to the left of z and to the right of z under the standard normal curve is

It is an open secret that airlines overbook flights, but I have just learned recently that bookstores underbook (I might have invented this new term.) textbooks.......... To make a long story short, our UMUC designated virtual bookstore, MBS Direct, routinely, as a matter of business practice, orders less textbooks than the amount requested by

Suppose that you need to transform 400 arcseconds (400") into radians. Mark all the correct answers. Finally, you need to do the calculations. If all the steps are correct you will obtain 6.37 radians Second, you need to transform degrees into radians by multiplying by a factor of /180. First, you need to transform arcseconds into degrees by

Halla la solucin de cada una de las siguientes ecuaciones lineales. Realiza cada paso ordenadamente. x27=89 8x+18=6x24 5x55=130 0.4x+2.4=1.23.2x 4712x+38=x+59

A researcher is doing eyetracking research where (using an eyetracker) they are observing the location of a person's eyes every second in one of 4 locations on a screen. A picture of the possible locations a person's eyes could be looking at are shown below. For simplicity, a person can only switch their stare from one zone to another after 1

Brewing beer involves putting sugar (S) and yeast (Y) together in a vessel so that alcohol (A) is produced as a by-product of the metabolism of sugar by yeast. Two important aspects of fermentation are the diminishing supply of sugar and the formation of excessive alcohol that will kill yeast cells. The model has some analogy to enzyme kinetics

49 14) Determine which option(s) the variable er could be If none of the options could be the variable write 'none'. 2 x e
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NAME DATE PERIO 6 Chapter 6 Test, Form 2A (continued) 11. The quadratic equation x2 - 8x = -20 is to be solved by completing the square. Which equation would be a step in that solution? A. (x - 4)2 = 4 B. x - 4 = +2i C. x2 - 8x + 20 = 0 D. x2 - 8x + 16 = -20 12. Find the exact solutions to 3x2 = 5x - 1 by using the Quadratic Formula. A -5+ V13 B.
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Student affairs departments at colleges provide programs and events that offer students opportunities to learn outside of traditional coursework. One popular avenue of engagement chosen by students is intramural sports. Does participation in intramural sports improve freshmen academic indicators such as GPA and retention after the first year? The
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2. Use the graph below to answer the following questions. 20 Tyrice 18 16 S 14 12 10 D 10 20 30 40 50 60 70 80 graxtig i. Calculate the Consumer surplus
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15 Insert the database function in cell K3 to calculate the average 3 donation for the records that meet the conditions in the criteria range. 16 Insert the database function in cell K4 to count the number of records 3 that meet the conditions in the criteria range. 17 Format the range K2:K3 with Accounting Number Format with zero 6 decimal
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Please help In order to see how protein content (in grams) and fat content (in grams) are related in hot dogs, nutritionists checked 25 different hot dogs. Using provided simple linear regression (SLR) line, calculate the residual in protein content for a hot dog with the observed fat content of 14 grams
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Everything is yellow must be answered. Thank you! Decision Variables Closet Tables Chairs Max production Q3. (25 points) Woodworks Industries Inc. produces a variety of products. In a particular manufacturing process, two types Max production req. 22.50 22.50 90.00 95 of wood, mahogany and pine along with the carpenters are the main resources of
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solve the system using elimination method SILL LIIC CII x + 4y - 6z = -1 2x - y + 2z= -7 -x + 2y - 42 = 5
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6. Let Z be the set of integers and Q be the set of rational numbers, A= {a, b, %, #} and X = {, {Z}}. Find: (1) P(A). (11) AxX. (i) PANX. (iv) (Z-0Q) and specified using the most concise notation. (15 marks)
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a - -00 For the polynomial function g, lim g(a) = -co. Which of the following expressions could define g(ac) ? A 5x - 2x4 B 5x2 - 2x7 C 9000x D - 2c3 + 2act
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Statistics and Probability question Data show that men between the ages of 20 and 29 in a general population have a mean height of 69.3 inches, with a standard deviation of 2.9 inches. A baseball analyst wonders whether the standard deviation of heights of major league baseball players is less than 2.9 inches. The heights (in inches) of 20
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Jeffery Wei received a 6-year non-subsidized student loan of $32,000 at an annual interest rate of 5.3%. What are Jeffery's monthly loan payments for this loan after he graduates in 4 years? ( Round your answer to the nearest cent.) Need Help? Read It Submit
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Consider the graphs of the following functions f(x) and g(x). 1 You wish to use the midpoint rule with 10 rectangles to approximate /| = / f(x) dx and -1 1 I, = / g(x) dx. Using the given visual data, which of the following statements is true? = Which of the following statement is implied by the Error Bounds theorem? Select one: O a. The absolute
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compute the value of the correlation coefficient 500 500 1000 1500 2000 2500 3000 3500 4000 4500 (2387, 2349) (2004, 3137) (1720, 2650) (2147, 1442) (1535, 4345) Part 2 out of 5 Compute the value of the correlation coefficient. Round your answer to three decimal places. CHECK NEXT
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Problem 5: Delay Model You have a printer that stores the arriving jobs with unlimited virtual memory before transmitting them one by one. You are given a job arrival rate of A, a cost per job (for memory allocated per job) of am, and a cost per unit printing speed sub. Now we model the steady state number of jobs in the system as an M/M/l/co/FIFO
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Below are elements under Quality Areas 1, 2, 3, and 5 of the National Quality Standard (NQS). In your own words: i. Explain each of these elements ii. Explain how they guide the providing of experiences in support of children's play and learning
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). Recall in the simple linear regression model in Module 3, I gave a real data example using the Nobel-winning Capital Asset Pricing Model (CAPM). In that example, we obtained R 2 = 0.108, or 10.8%, which is a small value way less than 100%. This means that the single independent variable, the market return, R M , does not explain the return of
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3 10 Let A = and b = 5 The QR factorization of the matrix A is given by: O N N -10 5 V/2 3 5 1 4 N = 5V/2 0 2V/2] 2 O (a) Applying the QR factorization to solving the least squares problem Ax = b gives the system: (use exact values) X = 0 2 2 (b) Use backsubstitution to solve the system in part (a) and find the least squares solution. X =12 8 -11
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The number of bacteria in a culture is increasing according to the law of exponential growth. There are 135 bacteria in the culture after 2 hours and 425 bacteria after 4 hours. (a) Find the initial population. (Round your answer to the nearest whole number.) (b)Y Write an exponential growth model for the bacteria population. Let represent the
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Use the following probabilities to determine the probability of event B. Pr(A c ) = 0.70 Pr ( B c | A ) = 0.40. Pr(B c | A c ) = 0.80

Determine which rows or columns of the game matrix M are recessive. Mequals=left bracket Start 2 By 3 Matrix 1st Row 1st Column 6 2nd Column 6 3rd Column 7 2nd Row 1st Column negative 5 2nd Column 7 3rd Column negative 3 EndMatrix right bracket

Analyses at the computational level seek to understand Group of answer choices the functions and purpose of a process. the rules that enable a process to function. how rules are accomplished physically. how information is acquired. representations of information

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