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Mathematics Questions and Answers January 02, 2022

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The speed of motion presented on-screen depends on... Group of answer choices the number of frames per second of celluloid used. the rate of projection alone. frame size and shape. the rate of shooting and the rate of projection

Can u answer 5 b and c. For 5c you need the information from question 4 I provided that in the picture Activity A (continued from previous page) 4. Turn off Show theoretical probabilities. Change the Sections in the spinner to 7, the Number to 4, and the sign to 2. A. In this game, what are the favorable outcomes? A number greater than or equal to
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Understanding what sampling distributions are and what affects them is very important for you to be able to grasp conceptually the majority of the rest of the course. Unit 8 discusses the concept of a sampling distribution. This discussion will help us examine them further with opportunity for some questions and answers, if you have them. Go again

After age 40, adults being to show height loss and weight gain. Question 1Select one: True False

In 2010 a poll on a website for Democratic supporters asked "Do you think President Obama has helped the economy?" 82% of the respondents said "yes". This sample is a(n) _____ response sample

7) researcher is conducting an audit of the Family Pharmacare Program Prescription records and is randomly selecting records to examine. They've taken a sample of 23 such records, and so far none of the sampled households has been for the Elderly age group. The researcher says, "The probability that the next record we sample is for the Elderly age

Se clasifican los directores ejecutivos por edad y puesto operativo, como se muestra en la tabla: Puesto Operativo Edad Menos de 55 Mas de 55 Finanzas 4 14 Marketing 1 5 Otros 4 2 Se selecciona un ejecutivo del grupo, la probabilidad de que el ejecutivo tenga menos de $5 anos es 0,23? OFalso Verdadero

The process or tools used when collecting quantitative data involve __________. the numbers and statistics found in interviews of the participants using open-ended questions participant interviews and statistical relationships the researcher in the process using field notes and reflecting on the findings numbers that allow the researcher to

Suppose f is a function defined on [a,b]. Let N be a number with f(a) < N < f(b). Then there exists c in (a, b) such that f(c) = N. Why is this statement false?

Answer the following: 1)Given the following obtained means: X1 = 3.12 X2 = 4.48 X3 = 3.75 X4 = 4.12 X5 = 3.39 How would the means be grouped together granting that the significance levels of the q-values are: X1 - X2 * * X1 - X3NS X1 - X4*# X1 - XSNS X2- X3* * X? - XA* * X7- X5* * X3 - XANS X3 - XSNS X4 - X5* * A. B. C. D. E. 4 48 4.12 3.12 3.39
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Stuck. 11. If G is the midpoint of FH, find FG. 11x-7 3x + 9 11x-7= 3x+9 F G H -7+9 = 3x+11x FG GH 2 = 8x & 8x = 2
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Un comerciante adquiere bolsas de arroz de tres molineras nacionales A, By C en los siguientes porcentajes: el 20% de las bolsas proviene de A, el 30% de B y el resto de C. Ademas, el 30% de las bolsas que recibe de A, el 80% recibe de By el 70% recibe de C con de calidad exceptional. La probabilidad que recibe de calidad exceptional es 0,40?

What is the numeric relationship between E(D) and E(T)? Why does this relationship make sense?What if Todd gets paid 1 penny per point each time he rolls? Let be the dollars earned by Todd on a roll. Question 4. Make a probability distribution table for showing the possible values of and the probability of each value. (Hint: The outcome of depends

help with this please 1. Polar Coordinates. For each part, convert the given rectangular coordinates to the corresponding polar coordinates with r >0 and 0
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Find the average rate of change of the function over the given interval. f ( x ) = x 2 + 6 x ,[1, 3]

Investigators compared Hemoglobin A1c's for individuals on a Western diet versus those on a Mediterranean diet. For those on a Western diet, quartiles were 4.5, 7.0, and 9.5. Among those on the Mediterranean diet, quartiles were 5.0, 6.2, and 7.5. What is the most appropriate test for this scenario? Group of answer choices Paired t-test Two group

For Multi-Way ANOVA, simulate a case study that is relevant to aviation traffic management

1.Find the equation for a line which passes through the points (-1, 10) and (3, -6). Write the equation in slope-intercept form. Show work. 2.A projectile is launched from a platform 15 feet high with an initial velocity of 80 feet per second, The height h of the projectile at t seconds after launch is given by h = -16t^2 + 80t + 15 feet. ( a) How
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Explain how you found answer BIG idea Measurement You can use formulas to find areas of polygons. Task 1 A real estate company sells plots of land. The plot shown at the 125 ft right costs $84,120. What is the price per square foot of the land? Explain how you found your answer. 260 ft 150 ft 265 ft BIG idea Measurement An are length is a
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Perfect High Low Low High Perfect Positive Positive Positive No Negative Negative Negative Correlation Correlation Correlation Correlation Correlation Correlation Correlation 80 00 0.9 0.5 0 -0.5 -0.9 -1
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Study and answer With the joint pdf of N-variate Gaussian density function below, derive the bi-variate Gaussian density function. (10points) fXXX ( 1, X2 , " " , X'N ) 1/2 x - X ] [ C * J' [ x - X = N/2 exp 2 : N - variate Gaussian densityThis exercise should be done two ways: by hand and using technology where possible. Let 1 A 01023 12 ' 12
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Understanding what sampling distributions are and what affects them is very important for you to be able to grasp conceptually the majority of the rest of the course. Unit 8 discusses the concept of a sampling distribution. This discussion will help us examine them further with opportunity for some questions and answers, if you have them. Go again

pls pls plssss need all these parts ASAP. thank you so so much in advance! 12. (25 pts) Let X and Y be random variables with joint pdf fxy (x, y) = 1, 0
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Question 3(a): When customers arrive at Cool's Ice Cream Shop, they take a number and wait to be called to purchase ice cream from one of the counter servers. From experience in past summers, the store's staff knows that customers arrive at a rate of 150 per hour on summer days between 3:00 p.m. and 10:00 p.m., and a server can serve 1 customer in

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For your Advanced English course, you must read 16 chapters of Leo Tolstoy's War and Peace each month. From past experience, you have found that the chapters take you approximately 4 hours each to read, with a population standard deviation of 1.2 hours. Let be the random variable representing the time it takes you to read one chapter. Assume is

8. Name plane P in another way. 9. What is the intersection of STand TR? 10. What is the intersection of TR and plane P? S 11. What is the intersection of plane P and plane STQ? T . Q 12. What is the intersection of SQ and TR? R 13. What is the intersection of plane P and plane STR? 14. What is the intersection of ST and SR? 15. What is the
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You would like to estimate how much a single taxpayer that itemizes on their individual tax return Schedule A. You randomly select 65 single taxpayer that itemizes on their individual tax return Schedule A and get a sample mean of $17,641 with a standard deviation of $3,190. Construct a 95% confidence interval for the amount a single taxpayer that

In Module 12 we are introduced to several basic statistics used in Crime Analysis. For this assignment you are to go online and locate the frequency and rate (which is the frequency compared to population) of residential burglaries for calendar year 2019 for the city in which you reside (these may be found on local police websites or through the

pls help thank you Question 4 Assume that the height of individuals follows a normal distribution of mean p = 160 and variance o =100 (fictitious numbers). a) Find the probability that an individual's height is greater than 170. (5 points) b) What is the second decile of height (the value for which 20% of the population is shorter than this
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QUESTION 8 ALPHA = 0.01 Shift 1 2 3 Machine A 10 8 6 B 6 12 8 C 6 6 21 D 8 9 16 E 9 7 24 F 6 5 11 G 7 9 7 H 11 6 7 Often frequency data are tabulated according to two categories to decide if there is a relationship between categories and counts, in other words. Do the categories matter? Machine shop Hi Tech errors are tabulated by Shift and

Suppose that the total cost of producing amounts x and y of two goods is TC = 3x + 4y - xy , and the prices (per unit) at which those amounts could be sold are p subscript x = 23 - x and p subscript y = 34 - y . (a) Find profit as a function of output. (b) Find the outputs of the two goods that give the maximum profit. (c) How do you know that

Please answer all parts, including the bonus part. Please show all steps, thank you. A student already has an offer of employment. She must now decide between three possible courses of action: a] To visit another potential employer in the UK for further interviews. She views the 11'me and effort of doing so as having a cost of 1000, which will be
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Activity 4 :General Instructions: Please place your name above, then complete the following questions. NOTE: Read the entire document below to get _a feel for the activity before continuing. Make sure to save this Excel file often using the filename "vourname Activity4Summer2024)". Once 'complete, submit your answers to this activity by attaching
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Question Ask a new Question 1.In a research article, you find that r is reported to be .48. How would you interpret this finding? a.The relationship is strong b.The relationship is moderate c.The relationship is weak d.The relationship is reported incorrectly 2.According to the theoretical normal curve, what percent of the scores in a data set are

Menu DS1000 - Assignment 3.p.. X + Create Sign in X All tools Edit Convert E-Sign Find text or tools Q Al Assistant Part 1 - Written Answer (Be sure to show all your work) Looking for key takeaways? K Ask Al Assistant Question 1 [17 Points] A study was conducted to see the number of pets who were overweight. The results are in the following table
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Section 1.3 question 6 I need help finding the answer Question 6 Identify the type of observational study Historical records are searched to find magnitudes of earthquakes prior to 1970 O Retrospective O Prospective O Cross-Sectional Submit
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A military nutritionist wants to estimate the average daily caloric intake of soldiers in a particular battalion. Based on previous studies, the standard deviation of daily caloric intake in this population is approximately 400 calories. The nutritionist wants to be 95% confident that the sample mean is within 100 calories of the true population

The two-way frequency table contains data about students' preferred exercise. Enjoys swimming Enjoys cycling | Row totals Likes running 28 62 90 Does not like running 46 64 110 Column totals 74 126 200 What is the joint relative frequency of students who like running and swimming? O 45% O 37% O 28% O 14%

Please help! According to an airline, flights on a certain route are on time 75% of the time. Suppose 25 flights are randomly selected and the number of on-time flights is recorded. (a) Explain why this is a binomial experiment. (b) Find and interpret the probability that exactly 16 flights are on time. (c) Find and interpret the probability that
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I'm lost on answering this HW question and my etext isn't much help! A group of researchers, in a study of problem solving, described one of their results comparing a specific group of participants within their overall control condition as follows: "This group took an average of 179 moves to solve the puzzle, whereas the rest of the control

A random sample of n = 4 scores is selected from a population. Which of the following distributions definitely will be normal? A. The scores in the sample will definitely form a normal distribution. B. The scores in the population will definitely form a normal distribution C. The distribution of sample means will definitely form a normal

The following data were collected from a repeated-measures study: Determine if there are any significant differences between the two treatments. Use a .05 level of significance. Remember to 1) State the null hypothesis, 2) Show all of your calculations, Use t -test for Two Related Samples , 3) Make a decision about your null hypothesis, and 4)

My course is secure programming. This part may be regarding Modular exponentiation. I guess this question need to use Windowing method to solve it. I uploaded my lecture video to youtube. You can see the video at 54:44 https://youtu.be/AGhx11CCpNg?t=3284 This is my question 3 Windowing method Compute x" where n = 2654310 [o - 7)8 bit Because we is
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solve the question List at least three factors that affect the MARK, and discuss how each one affects it. State whether each of the following involves debt financing or equity financing. (a) $10,000 taken from one partner's savings ac- count to pay for equipment repair (b) Issuance of preferred stock worth $1.3 mil- lion (c) Short-term loan of
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correlation exists between children's number of friends and theYou find that children who have fewer friends tend to be bullied more oftenIn this example, a frequency of them being bullied. positive Onegative zero (no correlation ) none of the above are correct

I am confused about even where to start with this type of question. In general, the prot function is the difference between the revenue and cost functions: P(x) = R(x) C(x). Suppose the price-demand and cost functions for the production of cordless drills is given respectively by p = 143 0.03x and C(x) = 75,000 + 65x, where x is the number of
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A quality control expert at Glotech computers wants to test their new monitors. The production manager claims they have a mean life of 75 75 months with a standard deviation of 5 5 months. If the claim is true, what is the probability that the mean monitor life would be greater than74.4 74.4 months in a sample of85 85 monitors?

In a meat processing plant with 1,200 employees in an impoverished county, records showed that there were 20 deaths over a one-year period. Analyses showed that in a similarly aged population (of the same size) in a nearby town, one would have only expected to see 16 deaths. How would one describe mortality at this plant in such a way as to

Which of the following statements in incorrect Question 19 options: In a linear regression output, R-square measures the goodness of fit of the least squares line Histogram is often used for showing a time trend Correlation coefficient between any two variables range between -1 and +1 A model is an abstraction of a real problem that tries to

After properly analyzing and running a regression on customer spending data from a local grocery store, you find: Spending = 11.5 + 7.5*(Income) + 6.19*(Satisfaction) Where Spending = average weekly spending of a customer, Income = customer's monthly income in thousands of $, and Satisfaction = average satisfaction level of a customer (on a scale

Questions for All after reviewing the handout: What is probability versus non-probability sampling? What are the four main types of sampling? Which type of sampling is the best method to obtain a sample that is representative of the population?

The correlation coefficient for the full dataset is r = 0.226. What does this number reveal? Is it consistent with the scatterplot? Suggest two possible explanations (hypotheses) which could have generated the value of the nonzero correlation coefficient. 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

For a group of 9 people, the distance to work (km) and the commute time (minutes) were recorded: Distance3.24.86.48.410.712.816.518.620.5 Time5710131217243655 If the distance to work is 12 km, how long would we expect the travel time to be, rounding to the nearest minute?

The mean salary offered to students who are graduating from Coastal State University this year is$ 24,215 , with a standard deviation of$ 3678 . A random sample of80Coastal State students graduating this year has been selected. What is the probability that the mean salary offer for these80 students is$ 24,750 or more? Carry your intermediate

Supposed a random variable, X, arises from a binomial experiment. If n=14 and p=0.13, find the following probabilities using the binomial formula. P(X=5) P(X12)

Jim is a 60-year-old Anglo male in reasonably good health. He wants to take out a $50,000 term (i.e., straight death benefit) life insurance policy until he is 65. The policy will expire on his 65th birthday. The probability of death in a given year is provided. x = age 60 61 62 63 64 P (death at this age) 0.01015 0.01387 0.01708 0.01975 0.02293

Which of the following describes a situation in which it is reasonable to reach a cause and effect conclusion based on data from a statistical study? Group of answer choices The study is based on a random sample from a population of interest. The study is observational, and the sample used is not a convenience sample. The study is an experiment

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The sample mean is 12, and the sample size is 36.The population follows the normal distribution and the standard deviation is 3.Use the .05 significance level.The following information is available: Ho:the mean is less than or equal to 10 H1:the mean is greater than 10 a.Is this a one or two tail test? b.What is the decision rule, Reject if?

Individual taxi fares in Metro City are normally distributed with a population mean equals to $10and a population standard deviation of $4.Assume drawing from an infinite population,a random sample of 64 fares is obtained. Based on these information, what is the probability that the samplemean fare of the 64 fares in the sample is more than$10.75?

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help with this please 3. Projection. Consider the vectors u=(11, 17) and v=(6, 2). a) Find the component of u along v. comp, (u)= WORK: b) Find the projection of u along w. proj, (u)= WORK: c) Resolve u into u, and u,, where u, is parallel to v and u, is orthogonal to v
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In a study of helicopter usage and patientsurvival, among the 45,516 patients transported byhelicopter, 241 of them left the treatment center against medicaladvice, and the other 45,275 did not leave against medical advice. If 60of the subjects transported by helicopter are randomly selected withoutreplacement, what is the probability that none of

What are the requirements to perform a one-way ANOVA or its post-hoc tests?

Please, help me. What is the margin of error for the population mean at 90% confidence level for the information in DATA. Wait Time (minutes) 1.1 6.8 1.9 0.1 0.4 3.1 1.9 2.0 5.1 1.3 3.6 3.6 2.7 1.9 7.5 3.8 2.3 9.2 3.0 3.3 1.8 4.9 6.0 4.1 1.8 5.7 6.7 2.4 3.3 8.6

I really need help to make an example that demonstrates the understanding of a bias learned in this module (selection, response, nonresponse) and also justifies choice of example.

Increasing the length of wait time typically results in more Group of answer choices student participation. lower-level answers. student confusion about what the teacher wants. student misbehavior

A professor was putting the grades in for her class of 10 students when she discovered that she accidentlly erased on grade. She knows that the average on the test she comuted prior to putting hte grades in was 82.4. She added the remianing 9 grades and got 732. Can you help this professor figure out what grade was erased

The "ufc" data we examined in last chapter's exercises can be loaded from ufc.csv (in the "data" directory of EssentialR). This contains data on forest trees, including Species, diameter (in cm, measured 4.5 feet above ground and known as "diameter at breast height" or Dbh), and height (in decimeters). Make a single barplot showing both variables

Which of the following is NOT a convenience sample? Selecting students who want to enroll in a popular course by a lottery. A group of students standing outside the Library on campus, asking other students to sign a petition to change Spring Break dates. Asking students about the quality of food available in the cafeteria as they leave. Asking

nother popular and more general way to formulate the chi-square statistic is in terms of observed and expected cell counts. The observed counts are what you actually observed in the study. The expected cell counts are what you would expect for the count in a cell if the null hypothesis were true. Question 4. To find out how many children we expect

Consider a multinomial distribution with four cells, sample size n, and probability vector ((1 p), p(1 p), p2 (1 p), p3 ) for some unknown probability p, 0 < p < 1. Let nj be the number of observations that fall in cell j. Test the hypothesis that H0 : p = 0.6. What is the test statistic and the asymptotic distribution under this hypothesis?

An ice cream store reports that25% of the cones they sell are "jumbo" size. You want to see what a "jumbo" cone looks like before you decide to purchase one, so you stand and watch the sales for awhile. What is the (geometric) probability that the first "jumbo" cone you see them sell is the6th cone? Use 4 decimal places in your answer.

Use the shared results from the Student Data Table to complete the following problems. Make sure to show all work/calculations. Calculate the Pearson correlation between hand and foot size for members of this STA-201 class. Graph the relationship, determine a hypothesis to test this relationship, and statistically test this hypothesis using
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A problem with cross-sectional data is that ______. Group of answer choices the data cannot be collected on more than one variable independent variables cannot be differentiated from dependent variables because there is no theory it is harder to establish cause and effect because the data are not collected over time there is differential attrition

Some researchers argue we have focused too much on statistical significance, and we should instead report the ______

For the following dataset, what is the measurement scale, what is the appropriate graph, and what is the appropriate measure of central tendency? What is your religion? Catholic, Catholic, Protestant, Jewish, Catholic, Muslim, Muslim, Jewish, Protestant, Protestant, Protestant, Protestant, Catholic, Jewish, Catholic, Catholic, Catholic,

A non-negative discrete variable Y follows a uniform distribution with minimum "m" and maximum "s". Also: m>0 and p>s. Which of the following should be used in MS Excel to generate a random value of Y. Question 21 options: MAX(RANDBETWEEN(RAND(),m,s),p) =RANDBETWEEN(s,m) =RANDBETWEEN(m,s) =MAX(MIN(Uniform(m,s),0),p)

Let x t be the MA(2) process defined by x t = w t 2w t1 + w t2 (a) Find the ACVF and the ACF for x t (b) Find the variance for 3 x 1 + x 2 + x 3

Let a and b be two numbers with b>a. Then the constant function f(x) = 1/(b-a) is a (uniform) probability density function on the interval [a,b]. What is its variance?

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The population mean and standard deviation are given below. Find the required probability and determine whether the given sample mean would be considered unusual. For a sample of n=70, find the probability of a sample mean being less than 20.6 if =21 and =1.24. .

Hi, I am not sure on how to solve this question 10- A group of students bought, in total, 25 items of clothing at two shops: Mango and Iora. The following table shows how many tops, jeans and sweaters were bought at each of the two shops: One item of clothing is chosen at random from these 25 items: (a)What is the probability that the chosen item
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A factory produces bicycles at a rate of 95 + 300r - 10r bicycles per week ( in weeks). How many bicycles were produced from the beginning of week 2 to the end of weck 3? (Give your answer as a whole or exact number.) 1970 number of bicycles: Incorrect
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Question / Of 12 Given that every twenty-ninth person in line will get a coupon for a free box of popcorn at the movies, what is the probability that you don't get a coupon when you're in line? Enter a fraction or round your answer to 4 decimal places, if necessary. Tables Keypad
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13 red, 9 blue, 7 green, and 6 yellow what would this frequency be

Suppose that an MBA program in a university admits only people with GMAT scores among the top 5%. Assume that scores in the GMAT test follows a N(500, 100) distribution. How high your GMAT score has to be to be admitted in this MBA program?

Consider Figure D (below). Figure D Body Mass Index O 10 15 20 25 Years of School C. (2 pts.) Using only the data points associated with the years of school above 16; what effect does this have on the direction and strength of the correlation coefficient? The data points above 16 years spent in school creates a negative correlation coefficient and
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UseExceltodetermine the P-value that corresponds to the given information. Round the answer to four decimal places. 1.) Left-tailed test for p ,z=-1.829 2.) Right-tailed test for, t=2.037,and n=25 3.) Two-tailed test for p , z =1.4

I have the answers, but can you please show the steps to get to these solutions? A box has 4 red and 4 blue balls. A ball is selected at random and removed without observing its color. The box now contains either 4 red and 3 blue balls or 3 red and 4 blue balls. a) Nate removes a ball at random from the box, observes its color and puts the ball

ctor and response variables, Jump to level 1 An airline wants to determine the relationship between total passenger weight and fuel consumption. The predictor variable is | Pick The response variable is Pick Check
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1.27 The data file Gold Price shows the year-end price of gold (in dollars) over 14 consecutive years. Graph the data with a time-series plot

Suppose pages per book in a library have an unknown distribution with mean 297 and standard deviation 25 pages. A sample of size n=75 is randomly taken from the population and the sum of the values is taken. Using the Central Limit Theorem for Sums, what is the standard deviation for the sample sum distribution? Select the correct answer below:

We would measure the correlation between Group of answer choices two interval/ratio level variables a nominal and an interval level variable two nominal variables a and c

A non-negative continuous variable X follows a normal distribution with mean "m" and standard deviation "s". The value of X can not be larger than "v". Which of the following should be used in MS Excel to generate a random value of X. Question 16 options: =MAX(MIN(NORM.INV(RAND(),m,s),0),v) =MAX(MIN(RANDBETWEEN(m,s),0),v)

When you see a listing of the best-performing mutual funds, invariably a sector or country fund will appear at the top of the list. However, a sector fund will also appear at the bottom of the list. Their lack of diversity makes sector funds highly volatile and not for the faint of heart. Would you risk putting all your eggsand dollarsin a single

For this part, imagine you are a researcher interested in determining whether or not there is a difference in taste scores between dark and light chocolate. Some participants will eat milk chocolate, and the rest will eat dark chocolate. They will all be given a "taste quality" test and the scores will be compared between each group to see if

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