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Mathematics Questions and Answers January 11, 2022

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Describe the data analyzed in the study. Identify the data's level of measurement. How was it collected?Evaluate possible sources of error or bias in the data. http://repo.pmi.edu/online/Master_Documents/MTH310_Research_Statistics/Lesson_7/Reference_Equations_Six_Minute_Walk.pdf

How any why population growth rates and the age-sex composition have differed between Sydney and the Rest of New South Wales and between different areas within in Sydney in recent years
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Maths A ball is dropped from a height of 66 meters. Its height exactly t seconds later is given by h(t) = -4.9t2 + 66 Find the time when the ball hits the ground. t Select an answer Find the velocity of the ball at any time t. v(t) Find the acceleration of the ball at any time t. a(t) Find the velocity of the ball at the instant it hits the
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A prize winning animal is going to be shown at the State Fair. A pen must be constructed to hold the animal. The rectangular pen will have three wooden sides, which cost 25 dollars per foot to construct. The front of the pen will be made of a special reinforced glass, which costs 55 dollars per foot to construct. The animal requires an area of 70

The average number of flying insects to land on an apple blossom is 2 per hour. Find the probability that you observe more than one insect in some hour.

A packet of vegetable seeds has a germination rate of 96%. What is the probability that exactly 10 out of 12 seeda planted will sprout?

Researchers randomly select and divide the population into experimental and control groups in which type of study? Question 5 options: a) Correlational b) Cross-sectional c) Experimental d) Longitudinal

I need help understanding the Rcode neecesary to answer the questions. This assignment will use the wbca data we have been using in class. Assume throughout that the prior probability of sampling a malignant tumor is To = 1/3 and the prior probability for sampling a benign tumor is 71 = 2/3. 1. Using all 9 features to classify in the wbca data,
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Use the review function to highlight text in a paper

There was a total of thirty-nine participants breaking off into four groups total. Nine participants in the groups of soccer, lacrosse, and basketball players. Twelve participants in a group of softball/baseball players. All the group participants were tested and compared to each other based on the number of concussions in each group. The

Consider a physical system, the behaviour of which is captured using the following time-varying differential equation. + kx' = 0 is a positive real number. Let (t) be the general solution of this equation. Here, t denotes time. It is known that I(0) = A and &(0) = 0. A is a positive real number. let T' be the minimum positive time such that r(T) =
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Dogs are inbred for such desirable characteristics as color; but an unfortunate by-product of such inbreeding can be the emergence of characteristics such as deafness. A 1992 study of bull terriers (by Strain and others, as reported in The Veterinary Journal ) found the following: (i)50% of the studied bull terriers are white. (ii)11% of the

Given two events G and H , the probabilities of eachoccurringare as follows: P( G ) = 0.4; P( H ) = 0.41; P( H AND G ) = 0.06.Using this information: Find the complement of P ( H AND G ). Can someone check my answer please. I came up with 0.94

In this assignment, we will implement a number of linear models (including linear regression) to model relationships between different clinical features for heart failure in patients. For the dataset, we use "heart failure clinical records data set at UCI: https://archive.ics.uci.edu/ml/datasets/Heart failure clinical records Dataset Description:

You intend to create college fund for your baby. If you can get an interest rate of4.3% compounded monthly and want the fund to have a value of$137,700after19years, how much should you deposit each month? $430.63 $332.76 $391.48 $7016.43

Which is a property of an angle Which is a property of an angle? O has two sides that each extend forever in both directions O has two endpoints O has two center points has two rays that share a common endpoint
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Implement a bootstrap_ci function to calculate the confidence interval of any sample statistic (in this case the mean). The function should take a sample, a function that computes the sample statistic, the number of resamples (default: 10000), and the confidence level (default: 0.95). The function should return the lower and upper bounds of the

2.(LO2= 30%) Topik: Monte Carlo Simulation a.Jelaskan karakteristik monte carlo simulation dan cari sebuah studi kasus pada bidang pekerjaan yang anda minati (tuliskan sumber jurnal atau buku referensi)! b.Apa perbedaan monte carlo simulation dengan Discrete Event Simulation (DES)

Which number line illustrates the problem below? x = -1 - (-2) - 3 A Image of a number line . . . spanning from negative 4 to positive 4 in increments of 1. A dotted line starts at negative 1 and goes to positive 1 . . . and a second dotted line then starts at positive 1 and goes to negative 3. B Image of a number line . . . spanning from negative

A pollster wants to construct an 80% confidence interval for the proportion of adults who believe that economic conditions are getting better. Estimate the sample size needed if no estimate of p is available, what sample size is needed so that the confidence interval will have a margin of error of 0.02? given , Margin of error, E = 0.02 No prior
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one data collection method I can use to explore this

: Good to go Fall 2023 MAT 152 Critical Thinking Project Introduction You have been chosen to present your paper on the project described below to a room full of individuals with minimal statistical understanding. Complete this project by providing explanations that everyone in the room can understand. Student Learning Objectives This project
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If two groups of numbers have the same mean, the their standard deviations must also be equal their medians must also be equal their modes must also be equal None of these alternatives is correct.

hello is there anyone who can check some of my homework question? 9.( 1 pt) For which of the following situations is the independent groups t-test appropriate (if inappropriate, why?): a.The independent variable is infant birth weight at one week (normal vs high); the dependent variable is resting heart rate. Appropriate b.The independent variable

Suppose the time, in days, until a component fails has the Gamma distribution with alpha=5 and lambda=1/10. When a component fails it is immediately replaced by a new component. Determine the exact distribution of the total time that the 40 components will last. Then use the function pgamma in R to find the exact probability and compare it to the

Screen Shot 2021-01-28 at 2.56.52 PM.png This data is about customers' satisfaction after visiting a caf. ID: Survey participants' ID Gender: Survey participants' gender Brand: Visited brand Satisfaction: Participants' satisfaction after their visit 1. Minimum of satisfaction is and maximum of satisfaction is , meaning that the range is

Integral using trigonometric substitution a) sqrt(9+25x^2)dx/(x^2) b) dx/(x(sqrt(9+25x^2))

lentils are sold in bags and the masses of the bags are assumed to follow normal distribution with mean of 1500 grams and standard deviation of 50. find the percentages of bags that have mass between 1478 and 1522

Calculate the derivative indicated. d^ 4 y/dx^ 4| x =9, y =2 x^ 3/4

In this study, we will conduct an ANOVA (analysis of variance) and a repeated measures ANOVA. For the simple ANOVA, we have defined three environmental conditions. We would like to know if mean core body temperature differs between these groups

Temperature is an example of Question 8 options: A. a qualitative variable B. a quantitative variable C. either a quantitative or qualitative variable D. neither a quantitative nor qualitative variable

Individual gas mileages (in miles per gallon)of Model ExtraSS (Extra Super-Sporty) sedans are normally distributed with a population mean of 20 and a population standard deviation of 2. Based on these information, if you bought aModel Extra SS sedan, what is the probability that the gas mileage (in miles per gallon) of your single, individual

(4 points + 1 point BONUS) There is some evidence to suggest that exposure to airborne fungal products may be associated with adverse health effects, for example, respiratory tract infections. A random sample of Canadian elementary schools was obtained and the following data was obtained for each: mesophilic fungi (y, in cfu/m3), building age
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I'm looking for a few examples i can use on a forum post, the question is " Please list as many different groups of complete events as possible for an experiment of your choice"

The following data set outlines the number of likes that I received on my last 15 Instagram posts. (J/K - I never get that many). 107 68 63 103 83 96 70 77 72 92 103 79 94 71 81 i) Fill in the frequency table(below) Instagram Likes Number of likes Frequency 60-69 70-79 80-89 90-99 100-110 ii) Draw a histogram (below) by drawing the line segment

The Centers for Disease Control and Prevention receives information about the causes for HIV/AIDS infection in the United States. Here are the causes of infection and their respective probability among American women ages 20 to 24 years old. CauseProbability Injection drug use? Heterosexual sex0.664 Perinatal infection0.125 Other causes0.095

Bootstrap Dotplot of X1 - X2 120 Left Tail Two-Tail Right Tail samples = 5000 mean =-177.556 std. error = 131.666 100 80 ...................... 60 0.025 0.950 0.025 ........... 40 ...... ........ 20 ... 0 . . . 800 -700 ::..:.. . -600 -500 400 300 -200 100 200 458.600 -177.556 0 100 64.600
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You wish to test the following claim (Ha) at a significance level of 0.05. H0: p=0.85, Ha: p does not equal 0.85. You obtain a sample of size n=560 in which there are 469 successful observations. For this test, you should NOT use the continuity correction, and you should use the normal distribution as an approximation for the binomial

Fill in the blanks so that the resulting statement is true. Question content area bottom Part 1 To express 0.1 as a percent, move the decimal point place(s) to the left right and attach a number sign. two zeros. a percent sign. a zero

Given the following Venn diagram, choose the correct set for the following: 2 M N 9 6 3 5 8 Universal Set = (2, 3, 5, 6, 8, 9] (2, 3, 4, 5, 6, 7, 8, 9] O (3, 4, 6, 7, 9)
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For a geometric random variable X Geom(p) with range {0, 1, 2, . . .} construct an underlying probability triple < , F, P >

Frequency Counts: what is the frequency count to calculate the mean

If you come to the conclusion that the integral diverges, answer with 2019. log x 625 + 2 da = - log n m The equation above holds for integers m and n, with n being power free. Find m + n. Find the smallest constant ( such that for every polynomial P(x) of degree 3 that has a root in the interval [0, 1], P(x)lax SC. max |P(z). Enter |10000 ]. A
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3 Run the same regression as in Q2 but remove sodium as a predictor. Which is the better model

Number of guests coming to the birthday party is discrete or continuous

Suppose you are a sociologist doing a telephone study on criminal activity in the Detroit area. You collect demographic data on the people you interview, including their addresses and phone numbers. What is wrong with calculating the mean of the area code data? Area codes are nominal data, not numerical. The median is the more appropriate

2g Given: v1 = 14 Volts v2 = 28 Volts R1 = 20 (Ohms) R2 = 40 (Ohms) R3 = 80 (Ohms) Find the currents ia and ib

Encuentre la probabilidad indicada. Una bolsa contiene 5 canicas rojas, 3 canicas azules, y una de mrmol verde.Encuentre P (no azul). 1/3 3/2 6 2/3

_____ explore the degree to which two or more research constructs are related or vary together. Group of answer choices a. Quasi-experiments b. Demand characteristics c. Reliability estimates d. Relationship questions

An urn contains 5 blue balls, 3 yellow balls and 2 red balls. Three balls are drawn without replacement. (i) What is the probability that all three balls are blue? (ii) What is the probability that two balls are blue and one ball is yellow? (iii) What is the probability that at least one of the balls is blue?

does increasing sample size improve the accuracy of interval estimates in statisticsMatch each of the following distributional characteristics with its meaning. Group of answer choices location Where either the middle or typical values of a numerical variable lie scale How concentrated or dispersed a numerical variable is roughness Whether a

1. The human resource manager at a large firm claims that absentees from work were reduced after a motivation course for personnel's. Before the course the portion of absentees for a month was 15/160 and after the course it was 10/140 . Can the manager's claim be supported at a 1% level of SIGNIFICANCE? 2. A machine that puts cornflakes into boxes

how to do the question 10. [1/3 Points] DETAILS PREVIOUS ANSWERS ASWSBE14 9.E.046.MI. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER You may need to use the appropriate appendix table or technology to answer this question. Consider the following hypothesis test. Ho: M 2 10 Ha : M
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Part 2: Flood Frequency Curves Since large flood events are random, it is very difficult to predict flooding. What we can do, however, is use data from past floods on a river to calculate the probability of a flood occurring. Small floods have a high probability and happen almost every single year, but big floods with a low probability occur less

Apply concepts you have learned in this chapter by analyzing images outside of the text. Match each sculptural method to the appropriate work of art for which it was used. assembling modeling casting carving Match each of the options above to the items below. A tall, tan, rectangular piece of stone displays three lines of glyph writing at the top.

(1 point) You roll two fair dice. Find the probability that the first die is a 3 given that the minimum of the two numbers is a 2. Note: Enter an exact answer using fractions, not decimals
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Health insurers and the federal government are both putting pressure on hospitals to shorten the average length of stay (LOS) of their patients. In 1996, the average LOS for non-heart patients was 4.6 days. A random sample of 20 hospitals in one state had a mean LOS for non-heart patients in 2000 of 3.8 days and a standard deviation of 1.2 days.

In our final discussion, we will apply what we learned about hypothesis testing to careers in health care. We'll also reflect on the course and discuss challenges and applications when it comes to statistics. For your initial post: Create a scenario for a hypothesis test that applies to your current or future career in health care. Write the

To develop cardiovascular fitness, one needs to expend approximately _____ calories per week. Multiple choice question. 500 1,000 4,000 300

AFDA 9.3 Practice 1. The Normal Curve - Characteristics a) b) c) shaped d) e) area under the curve = 2. The area under the curve is also the of data between any two points. 3. The Empirical Rule tells us that ... a) of the data lies within 1 standard deviation of the mean of the data lies within 2 standard deviation of the mean of the data lies

As reported in "Runner's World" magazine, the times of the finishers in the New York City 10 km run are normally distributed with a mean of 61 minutes and a standard deviation of 9 minutes. Let x denote finishing time for the finishers. a) The distribution of the variable x has mean 61 and standard deviation 9 b) The distribution of the
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Hot deck imputation uses the ACTUAL responses of individuals similar to the respondents to fill in missing data. Group of answer choices True False

The average teacher's salary in Connecticut (ranked first among states) is $57,337. Suppose that the distribution of salaries is normal with a standard deviation of $7500. If we sample 100 teachers' salaries, what is the probability that the sample mean is less than $56,000?

When a woman learns she is pregnant, her doctor calculates a due date for the baby. The due date represents the date on which the baby will be born if her pregnancy lasts the mean of all length for all pregnancies. Actual lengths of pregnancy terms turns out to be normally distributed about this due date (the mean) with a standard deviation of 15

Use the number line below, where RS - 6y + 2, ST = 2y + 6, and RT = 48. a. What is the value of y? b. Find RS and ST. R a. What is the value of y? y = 16 (Type an integer or a decimal.)
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Statistic Project (coding in R studio) I'm using regression for these questions, and i'm comparing the school ranking number and the tuition to see the relationship, the data set is called "univ" and the two variables colums are called "ranking" and "tuition". \f
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Find x , if = 400, P( < 396) = .0228, and n = 100. 2.00 20 200 0.20

In hypothesis testing, the value of the original claim is applied to which of the following hypotheses? Neither H1: nor H1: Only H0: Only H1: H0:

Can you please help me with this homework problem? Please include all steps when getting your answer. Thanks \f
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Convert into Degrees Celsius to following temperature numbers you should know (round the resulting numbers to the nearest tenth of a degree, keep at least 1 decimal in your answer): Normal axillary (measured under arm) body temperature is 97.5F Normal core body temperature (measured orally, rectally, or otically - in ear) is 98.6F Your child

Unfortunately, arsenic occurs naturally in some ground water. A mean arsenic level of = 8.0parts per billion (ppb) is considered safe for agricultural use. A well in Texas is used to water cotton crops. This well is tested on a regular basis for arsenic. A random sample of36tests gave a sample mean of x =6.8ppb arsenic, with s =2.9ppb. Does this

The useful life of a medical device depends on its initial quality. Let X denote the useful life of the device imeasured in weeks), and let Y denote the initial quality of the device. The device is such that its initial quality is in one of three classifications. These classifications are denoted by 1, 2, and 3 where 1 is best and 3 is worst. Let
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Use `scipy` to write a function that turns your solution to an individual simulation into a function where you can repeat the simulation any numbers of times while also being able to change the probabilities for each input (e.g. more or less views, more or less profit per sale, etc.) 2. Run the simulation 10,000 times and plot a histogram for the

As of 2013, an estimated __________ people are living in a country other than their country of origin. Another __________ people would like to move to another country permanently if they had the opportunity. Group of answer choices 232 million; 700 million 373 million; 800 million 516 million; 900 million 1 billion; 1 billion

11 Part B: Find the mean of the random variable x. Use this formula: EXP(x ) 1-1 (3 points) 2
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Q.2: The data presented below represents the Triton Sales per share for a period of 10 Years. Year 2000 2001 2002 2003 2004 2005 Sales 6.33 7.12 7.65 8.06 8.63 9.58 Year 2006 2007 2008 2009 Sales 10.96 11.58 12.29 13.59 Use Holt's linear exponential smoothing method with a= 0.3 and B=0.1.Forecast the company's sales per share for 2010 and 2011.
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A large test statistic F tells us that the sample means _______ the data within the individual samples, which would be unlikely if the populations means really were equal (as the null hypothesis claims). Question 12 options: a) differ more than b) differ less than c) are equal to d) don't vary with A golfer wished to find a ball that would travel

Was this an experiment or an observational study? Explain how you are deciding
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For a normal distribution with a mean of 112 and a standard deviation of 46, what is the Z value (distance from the mean) for a random value to be 275? (Use 2 decimal digits)

For pigs, the length of pregnancy varies according to a normal distribution with a mean of 114 days and a standard deviation of 5 days. According to the empirical rule, approximately 2.5 of all pig pregnancies will be larger than how many days? The "bell" of a normal density curve is approximately how many standard deviations wide.? Please give

Help with part A and B please Question 16 (2 points) Gregor wanted to know if pea plants with yellow seeds produce more seeds per pod than plants with green seeds. Gregor got peapods from 5 plants from his cousin in New Mexico who grows yellow pea plants and he got green peapods from 6 plants from his sister-in-law in Arizona. He counted the peas
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Find the sales tax for the item using a rate of 8%. (Round your answer to the nearest cent.) shoes, $56.99

X is uniform in the range [0,1]. Obtain the pdf of Y=-3log(X). What is its mean? 3. If g(X)=FX(x), where X is a continuous random variable, obtain the pdf, CDF and the mean of g(X). 4. X is uniform in [-2,6]. Obtain the pdf and CDF of Y=1/X2 . 5. An organization purchases 10 computers from a manufacturer with lifetimes modeled as exponential

Givensin(x)=7/8 with180 < x < 270.Findsin(2x)

Please give the codes that generate the answers for question 2. A & a. Interpret the estimates for 8, and 3,.
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A research method in which subjects respond to items in a questionnaire is called Participant observation. Survey research. Experiment. Secondary analysis

Can someone please help me with the coding (in R) and the answers for this question? Thank you. Task 1 (Discrete Joint Distribution) Consider the joint probability mass function of a pair of random variables (X, Y), Px,Y(1, j) = P(X = i, Y = j) for i, j = 1, ...,6. In R, we take px,y(i, j) = pXY [i, j] where pXY
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\f6) A standard normal random variable has u = 0 and a standard deviation o = 1. Use Table 3 to find the probability less than 2.22.7) A standard normal random variable has u = 0 and a standard deviation o = 1. Use Table 3 to find the probability greater than 3.28.\f
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True or False? A random number really has no meaning if you think of it as a single number

content area top Part 1 Determine whether the statement below makes sense or does not make sense, and explain your reasoning. When I toss a coin, the probability of getting heads or tails is 1, but the probability of getting heads and tails is 0. Question content area bottom Part 1 Choose the correct answer below. A. This statement does not make

The board of directors for a particular company consists of 10 members, 6 of whom are loyal to the current company president and 4 of whom want to fire the president. Suppose the chair of the board (who is a loyal supporter of the current president) suggests to randomly select 4 other board members to serve on a committee to decide the president's

Winning the jackpot in a particular lottery requires that you select the correct three numbers between 1 and 42 and, in a separate drawing, you must also select the correct single number between 1 and 31. Find the probability of winning the jackpot

solve the question If an alternative has a salvage value, how is it han- dled in the calculation of a B/C ratio relative to benefits, disbenefits, costs, or savings? The cost of grading and spreading gravel on a short rural road is expected to be $300,000. The road will have to be maintained at a cost of $25,000 per year. Even though the new road
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As part of an evaluation program, a sporting goods retailer wanted to compare the downhill coasting speeds of 2 brands of bicycles. She took 3 of each brand and determined their maximum downhill speeds. Which statistical test should she utilize? Select one: a. simple regression b. paired t-test c. 2-group independent t test d. correlation

Find the probability between z= 0 and z= 1.7 . Graph. Etc etc \f
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In a distribution of fingernail length where n=196, population standard deviation=7 and xbar=.75, compote a 92% Interval Estimate and determine if a nail is 1.87 long, will it be within the interval?

The Skeptical Scalpel is making a point about practical significance.What is that point?Do you agree?

Use the multiplication rule for independent events to determine the probability that you are accepted by all four colleges. Would you consider this to be a fairly likely event?Use the general multiplication rule to determine the probability of acceptance by both G and H.Use the general multiplication rule to determine the probability of acceptance

The driving distance was recorded for each Harper student in a sample of 30. A 95% confidence interval for is (9, 22) miles. a) State the statistical interpretation of the confidence interval in the context of this problem. We are 95% confident that Correct the average (blank) driving distance of all Correct Harper students is/are between Correct

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