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Mathematics Questions and Answers January 11, 2022

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Suppose that Yi' = 1,. . . ,n, are independent inverse gaussian random variables with unknown parameters [.51- and known parameter A. The probability density function of each K; is then given by: A f(y;u, A) = 2W3 exp { A(y #02} 2W2 u, A, y > 0 (a) Show that the distribution of Y;- is a member of the exponential family by identifying the canonical
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Eric wants to go skiing tomorrow, but only if there are 6 inches or more of new snow. According to the weather 0.3- report, any amount of new snow between 4 inches and 8 inches is equally likely. The probability density curve 0.2- for tomorrow's new snow depth is shown. Find the Density probability that the new snow depth will be six inches or
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National Mountain Mean 2111 2,162 Std Dev 921 916.89 Min 1101 1,424 Q1 1626 1729.75 Median 1881 1,931 Q3 2215 2224.5 Max 6516 5,817 compare

Glitz Analytics has created a regression model to predict the weekly box office revenue of Broadway shows. The idea is to predict next week's box office revenue for a show based on the current week's box office revenue of the show and also based on whether the next week is a holiday week or not. The 4 holiday weeks in a year are Easter week,
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Please show the work. 4. A card is drawn from a standard 52-card deck. Calculate the expected value for the game. A player must pay 7 dollars to play the game, which must be subtracted from the winnings. If a spade is drawn, the player wins 12 dollars; otherwise, they lose their 7 dollars. Calculate the price that would make the game fair. The
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The topic is Analyzing and Forecasting Time-Series Data I need help doing these trend analysis problems. You can use excel to solve the problems with data tables. Please let me know if you need more information on how to solve these problems. Section 16.3 Homework-Eliyah Atkins - Google Chrome X xlitemprod.pearsoncmg.com/api/v1/print/math Student:
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A school psychologist wishes to determine whether a new antismoking film actually reduces the daily consumption of cigarettes by teenage smokers. The mean daily cigarette consumption is calculated for each of eight teenage smokers during the month before and the month after the film presentation, with the following results: MEAN DAILY CIGARETTE

Linear regression Part 2 A. is also referred to as the naive method of forecasting. B. uses the simple moving average method of forecasting. C. uses the weighted moving average method of forecasting. D. uses the equation y = a + bx

A high end computer manufacturer sets the retail cost of their computers based in the manufacturing cost , which is $1800. However, the company thinks there are hidden costs and that the average cost to maufacture the computers is actually much more. The compnay randomly selects 40 computers from its facilities and finds that the mean cost to

Question 9 Please match the concepts to the most appropriate description. Simple Range Add all the scores after eac The Sum of the Squares n-1 The Sum Squares The numerator of the varia The degrees of freedom Only needs discrete data The vaiance A measure of kurtosis. Quiz Score: 75 O e W DELL
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Random selection is an important component of statistical sampling a. True b. False

I am trying to find the best answer for Problem 4 using probability and statistics \f
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20. [-/7 Points] DETAILS SCALC8 1.8.013. Use the definition of continuity and the properties of limits to show that the function is continuous at the given number a. p(v) = 4\\ 9v2 + 7, a = 1 lim p(V) _ lim 4\\ 9v2 + 7 v-1 4 lim v - 1 = 41 lim 4 1 9 lim V - 1 + lim 7 V-1 9 + p(1) = Thus, by the definition of continuity, p is continuous at a = 1
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A random sample of n1 = 10 regions in New England gave the following violent crime rates (per million population). x1: New England Crime Rate 3.5 3.7 4.0 3.9 3.3 4.1 1.8 4.8 2.9 3.1 Another random sample of 112 = 12 regions in the Rocky Mountain states gave the following violent crime rates (per million population). x2: Rocky Mountain Crime Rate
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Please help me to understand the problems below. thanks Find the rate of change of the distance between the origin and a moving point on the graph 3! = sin(3x) if dxfdt = 3 centimeters per second. Let D be the distance between the origin and a moving point on the graph of}r = sin 3;". Approximate the zero(s) of the function. Use Newton's Method
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Construct a 95% confidence interval of the population proportion using the given informati x=125,n=250 a Click here to view the table of critical values. The lower bound is I:I The upper bound is |:| (Round to three decimal places as needed.)
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SEM's key feature of assessing the fit of a hypothesized theoretical model to the observed data is complemented by its flexibility

Zareen reads a psychology journal article with these badges. Two information badges are shown. One says open materials. The other says preregistered. Based on the badges, identify the conclusions that can be drawn about the article. Conclusion(s) Drag appropriate answer(s) here The article reports all of the variables in the study, even those that

A bowl of soup at 170 F. is placed in a room of constant temperature of 60 F. The temperature T of the soup t minutes after it is placed in the room is given by T(t) = 60 + 110 e - 0.075 t Find the temperature of the soup 8 minutes after it is placed in the room. (Round to the nearest degree.)

Use a table of areas ( Table II ) to obtain the area under the standard normal curve that lies (pls. round your answer to four decimal places) to the left of -0.09 to the left of 2.03 to the right of 1.11 between 0.80 and 2.15 either to the left of -2.10 or to the right of 1.79 **Use a table of areas ( Table II ) for the standard normal curve to
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The scores of students on the SAT college entrance examinations at a certain high school had a normal distribution with mean 4 = 531.2 and standard deviation o = 28.6. > (a) What is the probability that a single student randomly chosen from all those taking the test scores 538 or higher? ANSWER: For parts (b) through (d), consider a simple random
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What percentage of TV shows in the US are majority female? Question 24 options: 21% 11% 41% 31% 1%

Question 1.

True or False? Like mathematical and analytical models, simulation is restricted to using the standard probability distributions

Mixed methods research has increased attention to using systematic reviews that include qualatative and quantitative studies. Question 5 options: True False

Many investors and financial analysts believe the Dow Jones Industrial Average (DJIA) gives a good barometer of the overall stock market. On January 31, 2006, 9 of the 30 stocks making up the DJIA increased in price (The Wall Street Journal, February 1, 2006). On the basis of this fact, a financial analyst claims we can assume that 30% of the
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16, 17, 17, 17, 18, 18, 18, 18, 19, 19, 20, 20, 20

4-19. In a common protein analysis, a dye binds to the protein and the color of the dye changes from brown to blue. The intensity of blue color is proportional to the amount of protein present. Protein (pg): 0.00 9.36 18.72 28.08 37.44 Absorbance: 0.466 0.676 0.883 1.086 1.280 (a) After subtracting the blank absorbance (0.466) from the remaining
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How many ways can you pick a president, a vice president, a secretary and a treasurer out of 28 people for student council

plz give me some explanation, thanks. X X X X are independantly and identically (i.i.d) distributed normal random variables population mean 7 and population variance 16 . The 1! 2' 3' 4 probability that the average of these four random variables lies between 5 and 9 is closest or equal to 0 0.6826 0.1587 \\/ 0 0.3174 0 0.8413
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A study conducted by the Human Resources analyst found the following relationship between the employees annual salary and the number of casual absenteeism days per year as follows annual salary: 22000 25000 35000 45000 56000 100000 75000 82000 95000 No of days casual absenteeism: 10 9 8 4 2 1 6 2 1 Run a trendline application between the two

Consider this histogram showing the number of students in grade five who have one or more pets Pet-Owners 10 8 6 Number of Students 4 2 O 2 3 4 5 6 7 8 9 10 Number of Pets What is the difference in the number of students with the most and least numbers of pets? O 2

math satistic Each year, the US Census Bureau surveys about 3.5 million households with The American Community Survey (ACS). Data collected from the ACS have been crucial in government and policy decisions, helping to determine the allocation of federal and state funds each year. Some of the questions asked on the survey are about their income,
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Consider the model wage ~ educ 1.1 We wish to do a statistical hypothesis test of the claim: "educ predicts wage". We shall use the Student's t-test, with a risk of 5%. Use beta0 for the intercept and beta1 for the slope as notation. In terms of the beta coefficient, what are the null and alternative hypotheses for testing this claim? 1.2 What is

A stone is thrown straight up with an initial velocity of 147 meters per second from the topof building with height of 49 meters. At what timeis the velocity zero

EVERY 10 YEARS THE S. CENSUS BUREAU COLLECTS INFORMATION ABOUT AMERICAN FAMILIESWHICH TERM FITS THIS DESCRIPTION ? A.CENSUS B.VITAL STATISTICS C.WINDSHIELD SURVEY D.NATIONAL HEALTH INTERVIEW SURVEY

If f ( x , y ) =366 x 2 y 2 , find f x (8,3) and f y (8,3) and interpret these numbers as slopes.

Madison used the equation below to find the number of mini netbooks she could purchase to fit her budget. 87.5x=350 How many mini netbooks can Madison buy?

The following chart shows the number of customer complaints from three regions of an organization for two separate years. 2018 2017 Northeast region 6,493 3,401 Southeast region 732 2,513 Central region 3,706 1,082 Find the probability for each question. (75 w ords, or 1 para graph) What is the probability that a complaint was from the Southeast

sample n=30 average score () of 7.00 standard deviation () of 2.50 data 4, 7, 6, 10, 6, 3, 8, 1, 5, 3, 8, 2, 4, 9, 3, 9, 5, 8, 10, 6, 3, 4, 9, 10, 7, 5, 3, 5, 8, 4 What is the z-score that is associated with your sample mean? Briefly describe how you arrived at that score what can you say about your sample once you know its z-score?

The following table provides information on the living area (sq ft) and price (in thousands of dollars) of 10 randomly selected houses listed for sale. Use an excel spreadsheet to perform analysis and answer questions #1-9. living Area - 3008 (sq ft) 2032 2272 1840 2579 2583 1650 3932 2978 2176 Price - $275 220 255 189 260 284 172 370 295 260

A samplemean, samplesize, and sample standard deviation are provided below. Use theone-mean t-test to perform the required hypothesis test at the 1% significance level. x=14, s=7, n=15, H0: =20, Ha: <20 The test statistic is t= ? .

Tasha found the following scatterplot that shows four different compact cars at different speeds, from 20 to 70 mph. Which answer choice correctly indicates the explanatory variable and the response variable? a.) Explanatory variable: Cars Response variable: MPG b.) Explanatory variable: MPG Response variable: MPH c.) Explanatory variable: MPH

A certain make of cloth has on the average one defect per 20 square meters. a. What is the probability that a roll, 2 meters wide and 30 meters long, will have one defect? b. Five persons buy one roll each of this cloth. What is the probability that no one will buy a roll with defects? c. If 5 rolls were selected, what is the probability that 3

The Fish and Game Department stocked a lake with fish in the following proportions: 30% catfish, 15% bass, 40% bluegill, and 15% pike. Five years later it sampled the lake to see if the distribution of fish had changed. It found that the 500 fish in the sample were distributed as follows. Catfish. Bass Bluegill Pike 112 82 226 80 In the 5-year

The process of determining the meaning or worth of data is the process known as Group of answer choices data management data cleaning data evaluation

please organize the answers and make it clear (2) In this problem we nd a formula for the \"envelope\" of the shape traced out by a ladder sliding down a wall. See the animated gure on Canvas. (8-) ('3) Suppose the ladder has length 1 and begins upright with its top at (0,1) and its bottom at (0,0). We imagine the bottom of the ladder has position
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Why is the normal distribution so ubiquitous in our lives? Why is the bell curve used to represent the normal distribution? Why not a different shape? In what situation would we examine a normal distribution curve? In what situation would we examine a sampling distribution curve

Suppose that the heights of adult women in the United States are normally distributed with a mean of64.5 inches and a standard deviation of2.4inches. Jennifer is taller than70% of the population of U.S. women. How tall (in inches) is Jennifer? Carry your intermediate computations to at least four decimal places. Round your answer to one decimal

Poll Results in the Media: USA Today provided results from a survey of 1144 Americans who were asked if they approved of Brett Kavanaugh as the choice for Supreme Court justice. 51% of the respondents said they did approve, and the margin of error was given as 3.5 percentage points. What essential element of the survey was omitted? Describe what

A _______ is used to present data in a simplified, graphical format that allows your audience to read less text while still being provided with valuable information. Question 19 options: A) cell B) table C) legend D) chart

For which pair of variables would you expect a negative correlation? Group of answer choices students' exam scores and how much time they studied bottles of sunscreen sold each week vs. containers of ice cream sold each week age and salary altitude on a mountain and temperature height and weight

Section 1.3 question 7 I need help finding the answer Question 7 0/1 pt 5 3 19 0 Deta You want to determine if cinnamon reduces a person's insulin sensitivity. You give patients who are insulin sensitive a certain amount of cinnamon and then measure their glucose levels. Is this an observational study or an experiment? O observational
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Listed in the accompanying table are weights (lb) of samples of the contents of cans of regular Coke and Diet Coke. Assume that the two samples are independent simple random samples selected from normally distributed populations. Do not assume that the population standard deviations are equal. Complete parts (a) to (c). Click the icon to view the
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Assume that 37.5 37.5% of people have sleepwalked. Assume that in a random sample of 1524 1524 adults, 616 616 have sleepwalked. a. Assuming that the rate of 37.5 37.5% iscorrect, find the probability that 616 616 or more of the 1524 1524 adults have sleepwalked. b. Is that result of 616 616 or more significantlyhigh? c. What does the result

The accuracy of a census report on a city in southern California was questioned by some government officials. A random sample of 1215 people living in the city was used to check the report, and the results are shown below. Ethnic Origin. Census Percent Sample Result black 10% 130 asian 3% 43 anglo 38% 479 latino/latina 41% 495 Native American 6%

Can someone help me to solve this Consider the function y=x^2+x+9 what is the equation of the tangent line at x=2 Please walk me thru step by step thanks in advance:)

A dependent, aged seventeen (17), has a day job after school and makes $5,500 during TY2023. Their parents collectively earn $65,000 a year for themselves, the 17-year old dependent, and two (2) other minor dependents (a total of five (5) people in the household). Does the dependent pass the support test for being a qualifying child? (Assume the

Estimar la razon seal ruido para el diseo L8 y L4 del problema en el proceso de produccin de un pigmento en cierto color, Primero se estima la media, luego la desviacion estandar y despues aplicar con esos datos la formula ,como referencia el primer dato de la razon seal ruido es -18.71

A company that manufactures drugs used to treat heart disease wants to determine if a new drug and exercise can affect cholesterol levels. What are the independent variable (IV) and the dependent variable (DV) in this proposed study? Group of answer choices a. the DV is cholesterol levels, the IVs are the drug and exercise b. the DV is exercise,

In a study of factors affecting whether soldiers decide to reenlist, 320 subjects were measured for an index of satisfaction. The sample mean is 28.8 and the sample standard deviation is 7.3. Use the given sample data to construct the 98 percent confidence interval for the population mean. [27.85, 29.75]

A client's self-esteem score is in the 25th percentile of the standardization sample. What does this mean? The client scored below 25% of the sample The client scored similiar to 25% of the sample The client scored higher than 25% of the sample It cannot be determined from the information provided

Which of the following is true regarding a confidence interval for the population mean? It describes how close to the sample mean the unknown population mean is likely to be. It pinpoints where the population mean is. It calculates the true value of the population mean. The population mean is always in the middle of the confidence interval

We have two urns. Urn 1 contains 14 red balls and 12 black balls. Urn 2 contains 6 red balls and 20 black balls. \f
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For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding. In a random sample of 70 professional actors, it was found that 35 were extroverts. (a) Let p represent the proportion of all actors who are extroverts. Find a point estimate for p . (Round your answer to four decimal

1. Question Help x 9.1.10-T Since an instant replay system for tennis was introduced at a major tournament, men challenged 1400 referee calls, with the result that 428 of the calls were overturned. Women challenged 761 referee calls, and 226 of the calls were overturned. Use a 0.01 significance level to test the claim that men and women have equal
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The following are the ratings of males by females in an experiment involving speed dating. Use the given data to construct a boxplot and identify the5-number summary. 2.0 2.5 3.5 4.0 5.0 5.0 6.0 6.0 6.0 6.0 6.0 7.0 7.0 7.5 7.5 7.5 8.5 8.5 8.5 9.5 The5-number summary is __ , __, ___ , ___ and ____

Use a significance level of 0.05. c. Letting y represent the time and let x represent the distance, find the regression equation. d. Based on the given sample data, what is the best predicted price for a piece of gold that weighs 1.5 ounces
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Please see attached. Chapter 6 Written Homework 5. For which of the following distributions may we use the Empirical Rule? A B C 6. The mean of a normally distributed data set is 110, and the standard deviation is 15. a) Use the Empirical Rule to nd the probability that a randomly-selected data value is greater than 95. b) Use the Empirical Rule
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In the 2010 General Social Survey, 1,298 randomly selected Americans were asked, "How many hours do you spend watching television each day?" Let denote the mean daily hours spent watching television for all Americans. The 95% confidence interval obtained for was (2.32, 3.24). What is a correct interpretation of this interval? Is it plausible that

In order to maintain lawful status in the United States a F-1 student must be ______________ Group of answer choices A full time bona fide student in the first year in the same school he is approved for admission; A full-time bona fide student working during the entire duration of the course; A full time bona fide student that must maintain valid

Let f(x) = x ^(1/1x) for x 0,Can f be defined at x = 1 in order to make the function continuous there?

According to astudy, 76% ofK-12 schools or districts in a country use digital content such asebooks, audiobooks, and digital textbooks. Of these 76%, 13 out of 20 use digital content as part of their curriculum. Find the probability that a randomly selected school or district uses digital content and uses it as part of their curriculum.

why does e^I_jlog(lambda_j) give a diagonal matrix of lamda_j's

You have a table of stocks and their corresponding stock prices. You would like a quick summary of statistics such as median stock price, mean stock price, and standard deviation. What is the best tool to help you find this data? The AVERAGE, MEDIAN, and STDEV functions in the Insert ribbon The Descriptive Statistics feature under Data Analysis in

The distribution of vitamin C amount in vitamin drops produced by a given factory is approximately Normal, with a mean of 60.0 mg and a standard deviation of 0.5 mg. Reference: Ref 13-10 If you take a random sample of 25 vitamin drops, what is, approximately, the probability that the average vitamin contentis between 60.25 and 60.75 mg?

An unknown distribution has a mean 12 and a standard deviation of one. A sample size of 25 is taken. Let X = the object of interest. a.What is the standard deviation of X? b. What is P(x > 290)?

QUESTION 1 Each week Smith's Department Store selects a simple random sample of 100 customers to learn about the amount spent per shopping trip. Use the data from the excel file to solve the following. What's the margin of error at alpha 0.05? (Hint: Use formula "CONFIDENCE. NORM(alpha, stdev, size)" Smith's Data.xIsx O 3.62 4.31 O 5.67 O 3.92
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The x- and y-coordinates of a moving particle are given by the parametric equations below. Find the magnitude and direction of the velocity for the specific value of t. Sketch the curve and show the velocity and its components. X=3t y=4-t t=3

Which of the following are true? Select one: a. Number of trips made in the last month is prone to error as different individuals may have made different number of trips. b. The idea behind using #TRPS as a variable is to see if it effects the TIPAMT - customers visiting more might leave more (or less) tip. c. Both are true

The Alternate Hypothesis states there is a difference in final scores between attended review session and did not attend review session

The pH measurements of water specimens from various locations along a given river basin are Normally distributed with mean 8 and standard deviation 0.3. Reference: Ref 11-1 What is, approximately, the probability that the pH measurement of a randomly selected water specimen is a value between 7.5 and 8.2? 0.3003 0.6997 0.9522 0.9902

Q.3.Suppose Education department of New York State is contemplating whether the state of New York receives a significantly different amount of public school funding (per student) than the USA average. They find that the USA mean public school yearly funding is $6800 per student per year, with a standard deviation of $400. Suppose the department

Observation Forecast Three-Period Moving Average Forecast 100 90- C. 85- 80 Time Period 2 3 6 7 8 9 10 11 12 13 14 A\fT U C D G K M N 0 P Q R S A B E F H Moving Average Forecasting Use the area below to draw a line chart for the three-period moving average. Periods in moving average 3 Time Period Demand Forecast Error Error*2 Formulas 1 85 80 OUR
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Define multivariate analysis In your own words, define multivariate analysis. Name the most important factors contributing to the increased application of techniques for multivariate data analysis in the last decade. List and describe the multivariate data analysis techniques described in this chapter. Cite examples for which each technique is
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A research physician wants to study the effectiveness of a new post-surgery recovery procedure. He takes a random sample of 25 surgeons from across the U.S., and asks them to recommend the technique to patients who would be a good candidate for the recovery procedure as part of the first clinical trials for this procedure. The most likely type of
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Please help me with these calculus questions. Score: 0.33 of 1 pt 22 of 23 (23 complete) HW Score: 93.33%, 23.33 of 25 pts 8.6.91 Assigned Media Question Help Let R be the region in the first quadrant bounded by the curve y = sec " (4x) and the line y = -. Suppose a tank that is full of water has the shape of a solid of revolution obtained by
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If you are able to provide a written response explaining how each step was taken that would be great! This is a practice problem and I am using it as a study resource. This will not be graded. Apple is considering marketing one of mo new smartphones for the coming holiday season: iPhone 8 and iPhone X. Estimated prots in total USD under high,
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1.a)A student tests whether the professor's speaking style (monotone, dynamic) and student interest (low, high) are independent. State the degrees of freedom for the test. df =____ b)An instructor tests whether class attendance (low, average, high) and grade point average (low, average, high) are independent. State the degrees of freedom for the

uiz Quantitative research where the independent variable is observed and not manipulated is called

Form a power series for "x times integral of (tan^-1)(x^2) dx". Also, generate the power series for tan^-1(x). Answer in both summation form and expanded form.

Determine whether each statement can be assumed from the A B figure. Explain. E 23. LDAB is a right angle. 24. AB L BC 25. LAEB = LDEC 26. LDAE = LADE C D 27. LADB and ZBDC are complementary
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The table summarizes results from 980 pedestrian deaths that were caused by automobile accidents. Driver Pedestrian Intoxicated? Intoxicated? Yes No Yes 50 73 No 246 611 If two different pedestrian deaths are randomly selected, find the probability that they both involved pedestrians that were intoxicated. Report the answer as a percent rounded to
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Office Equipment, Inc. (OEI) leases automatic mailing machines to business customers in Fort Wayne, Indiana. The company built its success on a reputation of providing timely maintenance and repair service. Each OEI service contract states that a service technician will arrive at a customer's business site within an average of 3 hours from the

o What is the probability that a given complaint did not occur in 2018 and was not fro the Soul tion
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determine and report the median draft number for all months. Rank Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 1 17 4 29 2 31 20 13 11 1 5 9 3 2 52 25 30 14 35 22 15 21 6 7 19 10 3 58 57 33 32 37 28 23 36 8 24 34 12 4 59 68 108 62 40 60 27 44 18 38 46 16 5 77 86 122 74 55 64 42 45 49 72 47 26 6 92 89 136 81 65 69 50 48 63 79 51 39 7 101 91 139

Question 1. (2 points total. Each part is worth 0.5 points.) Suppose we are interested in understanding the amount of income (in dollars) "the typical person" in the United States makes in a given year. We would like to construct an estimate of the average income of individuals in the United States, so we conduct a random sample of 1,000 people
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If I want to indent a table 20 pixels from the left and right edge o the web page what CSS can I use? Group of answer choices table { margin:0 20px; } table { margin-left:20px; margin-right:20px; } table {margin:0 20px 0 20px; } all of the above

Suppose f(x)=(2x^2-4x+3)^4 what is the equation of the line tangent to f at the point (1,1)? Show me how to approach this problem and solve it

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